Sleep-aiding essential oil formula containing cedar himalaya

Abstract

The invention provides a formula of sleep-aiding essential oil containing cedar himalaya, relates to the technical field of sleep-aiding essential oil, and aims to solve the problems of single effect, poor stability and insufficient skin tolerance of existing sleep-aiding essential oil. The formula comprises the following components in parts by weight: 0.5-5 parts of Himalaya cedar essential oil, 80-95 parts of base oil, 1-10 parts of synergistic sleep-aiding essential oil, at least one of lavender essential oil, chamomile essential oil and sandalwood essential oil, and 0.1-1 part of optional antioxidant. During preparation, the components are ensured to be uniform through a process of stirring at a constant temperature of 25-35 DEG C and mixing at a rotating speed of 200-300rpm, the pH value of the product is 5.5-7.0, the retention rate of the active components is greater than or equal to 90% after the product is stored in a dark place at 25 DEG C for 6 months, and the use mode is that the product is smeared on wrists / necks / soles 1-2 hours before sleep, and 0.5-2mL of the product is smeared on each time. Tests show that the sleep time of insomnia people can be shortened to 15-22 min after the essential oil is continuously used for 28 days, the PSQI score is reduced by 40%-54%, the skin irritation is zero, the essential oil is suitable for preparing external sleep-aiding essential oil cream, ball bottles and other products, and a safe and efficient solution is provided for sleep disorder people.

Description

Technical Field

[0001] This invention belongs to the field of sleep-aid essential oil technology, and more specifically, relates to a sleep-aid essential oil formula containing Himalayan cedarwood. Background Technology

[0002] With increasing life pressures and disrupted sleep patterns in modern society, the global population suffering from sleep disorders has exceeded 30%. Among them, patients with mild to moderate insomnia tend to choose topical care products that are safe and have no risk of dependence. Sleep-aiding essential oils have become a research hotspot in this field due to their ability to regulate nerves through both olfactory and skin absorption.

[0003] Current sleep-aid essential oil technology has the following key shortcomings:

[0004] The effects are singular and weakly targeted: Most mainstream formulas use lavender and chamomile essential oils as the only active ingredients, acting on the nervous system only through a single sedative ingredient. They are poorly adaptable to different types of insomnia, such as anxiety and difficulty falling asleep. Furthermore, they do not utilize the unique sedative effect of α-cedrol in Himalayan cedarwood essential oil (which can reduce cortisol levels) and lack a multi-ingredient synergistic design.

[0005] Stability and shelf life defects: Some formulas do not contain antioxidants and do not specify storage conditions, which makes the unsaturated components in the essential oil (such as linalool and nerol) easy to oxidize and deteriorate. After 3 months of storage, the retention rate of active ingredients is often less than 75%, which affects the long-term use effect.

[0006] Insufficient skin tolerance and absorption: The base oil is mostly a single mineral oil or a high-viscosity plant oil, which either feels greasy and is slowly absorbed, or lacks moisturizing and repairing ingredients (such as vitamin E and linoleic acid). Sensitive skin is prone to redness and itching when using it, and the effective ingredients of essential oils are difficult to penetrate into the superficial layer of the skin to play their role.

[0007] The formulation design lacks a systematic approach: existing technologies have not established a matching system of "core active ingredients - synergistic ingredients - base oil - process parameters". For example, the weight ratio of cedarwood essential oil to synergistic essential oil is not limited (such as lavender: cedarwood = 1:0.2-1), which leads to unstable synergistic effects, or improper stirring temperature / speed during preparation, causing component stratification.

[0008] In summary, there is an urgent need for a topical essential oil formula that uses Himalayan cedarwood essential oil as its core, while also considering its synergistic sleep-aiding effects, stability, and skin safety, in order to overcome the shortcomings of existing technologies. Summary of the Invention

[0009] To address the aforementioned technical problems, this invention provides a sleep-aiding essential oil formula containing Himalayan cedarwood, which solves the technical problems of existing sleep-aiding essential oils, such as single effect, poor stability (active ingredients are easily oxidized and have low retention rate after storage), insufficient skin tolerance (easily irritates sensitive skin), and lack of systematic formula design (no scientific ratio of core and synergistic ingredients, and unclear preparation process parameters).

[0010] A sleep-aiding essential oil formula containing Himalayan cedarwood, comprising the following components by weight:

[0011] Himalayan cedarwood essential oil 0.5-5 parts, carrier oil 80-95 parts, and sleep-aiding essential oil 1-10 parts;

[0012] The sleep-aiding essential oil is selected from at least one of lavender essential oil, chamomile essential oil, and sandalwood essential oil;

[0013] This formula is used to prepare topical essential oil products with sleep-aiding properties.

[0014] Preferably, the base oil is selected from at least one of sweet almond oil, jojoba oil, and grapeseed oil;

[0015] When the base oil is a blend, the weight ratio of sweet almond oil to jojoba oil is 1:0.5-2.

[0016] Preferably, the synergistic sleep-aiding essential oil contains 1-5 parts by weight of lavender essential oil, and the weight ratio of lavender essential oil to Himalayan cedarwood essential oil is 1:0.2-1.

[0017] Preferably, the sleep-aiding essential oil further comprises Roman chamomile essential oil, with the content of Roman chamomile essential oil being 0.5-3 parts by weight, and the weight ratio of Roman chamomile essential oil to Himalayan cedarwood essential oil being 1:0.5-3.

[0018] Preferably, it also contains 0.1-1 parts by weight of an antioxidant, wherein the antioxidant is vitamin E or rosemary extract.

[0019] Preferably, the preparation method includes the following steps:

[0020] S1: Stir the base oil at a constant temperature of 25-35℃ for 5-10 minutes;

[0021] S2: Add Himalayan cedarwood essential oil and sleep-aiding essential oil in sequence, and stir at 200-300 rpm for 10-20 minutes;

[0022] S3: If an antioxidant is to be added, add it after step S2 and continue stirring for 5-8 minutes to obtain the final product.

[0023] Preferably, the sleep-aid essential oil product is applied to the wrists, neck, or soles of the feet 1-2 hours before bedtime, with a single application of 0.5-2 mL.

[0024] Preferably, the preferred proportions of each component, by weight, are as follows:

[0025] Himalayan cedarwood essential oil 1-3 parts, base oil 85-92 parts, sleep-aiding essential oil 2-6 parts, antioxidant 0.2-0.8 parts.

[0026] Preferably, the sleep-aiding essential oil further comprises bitter orange blossom essential oil, with the content of bitter orange blossom essential oil being 0.3-2 parts by weight, and the weight ratio of bitter orange blossom essential oil to Himalayan cedarwood essential oil being 1:1-2.5.

[0027] Preferably, the pH value of the formula is 5.5-7.0, and the retention rate of the active ingredients of the essential oil is ≥90% after 6 months when stored at 25°C in the dark.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] This invention, for the first time, uses Himalayan cedarwood essential oil (containing α-cedrol ≥25%) as the core active ingredient, combined with lavender essential oil (linalool ≥35%), Roman chamomile essential oil (matricaria champaca ≥0.8%), or bitter orange blossom essential oil (nerol ≥20%). Through a multi-target mechanism of reducing cortisol, inhibiting nerve excitation, and soothing emotions, it achieves synergistic effects. Testing showed that Example 4, after 28 days of continuous use, reduced sleep onset time from 46±8 minutes to 15±3 minutes, and the PSQI score decreased from 12.7±1.2 to 5.9±0.9, significantly better than Comparative Example 1 without cedarwood essential oil. It also showed good suitability for anxiety-related and difficulty-to-fall-asleep insomnia.

[0030] Excellent stability and extended shelf life: This invention ensures stability in two ways: First, by adding Vitamin E (D-α-tocopherol ≥96%) or rosemary extract (sarsaparilla acid ≥5%) as antioxidants to inhibit essential oil oxidation; second, by limiting storage conditions to 25°C, protected from light, and sealed, and by ensuring that the retention rate of active ingredients (α-cedrol, linalool) is ≥90% after 6 months (92.5%-93.2% in the example tests). Compared with Comparative Example 2, which used excessive amounts of cedarwood essential oil (6-month retention rate of only 78.3%), the 0.5-5 parts of cedarwood essential oil used in this invention, combined with the synergistic effect of antioxidants, effectively prevents degradation of active ingredients, extending the shelf life to over 12 months.

[0031] It boasts high skin safety and is suitable for sensitive skin. The base oils are made from cold-pressed virgin sweet almond oil (containing linoleic acid), jojoba oil (mimicking the structure of human sebum), or grape seed oil (containing proanthocyanidins), all of which are low-irritant and highly skin-friendly ingredients. When mixing base oils, the ratio of sweet almond oil to jojoba oil is controlled at 1:0.5-2 to balance absorption speed and moisturizing properties. At the same time, it has been verified through human skin occlusion patch test (n=30, 24h application) that no redness, swelling, or itching reaction occurred in any of the embodiments, and the skin irritation score was 0 (out of 4), which solves the problem that existing formulas are not friendly to sensitive skin.

[0032] The preparation process is simple and controllable, ensuring the uniformity of components. The present invention limits the preparation process parameters as follows: the base oil is stirred at a constant temperature of 25-35℃ for 5-10 minutes (preheating to aid absorption), the essential oil is stirred at 200-300 rpm for 10-20 minutes during the mixing stage (to avoid separation), and the antioxidant is added later and stirred for 5-8 minutes (to prevent high-temperature failure). The process steps are clear and no special equipment is required. During industrial production, the component uniformity reaches more than 98%, avoiding local differences in effect caused by uneven mixing.

[0033] With a wide range of applications and flexible product forms, the formula of this invention can be directly used to prepare various external products such as rollerball bottle essential oils, essential oil creams, and massage oils. The single dosage is only 0.5-2mL, which is convenient to use (apply to wrists / neck / sole of the foot). The scent is a complementary blend of the woody fragrance of cedar and the floral fragrance of lavender / orange blossom, which is highly acceptable to users and can meet the needs of multiple scenarios such as personal care and home health care. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the formulation of the present invention. Detailed Implementation

[0035] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0036] Please see Figure 1 This invention provides a sleep-aiding essential oil formula containing Himalayan cedarwood. The core of this invention lies in using Himalayan cedarwood essential oil as the core, enhancing the calming effect through synergistic sleep-aiding essential oils, selecting skin-friendly base oils to improve skin absorption efficiency, adding antioxidants to extend shelf life, and ensuring the uniformity of ingredients through a specific preparation process, ultimately forming a safe and effective topical sleep-aiding essential oil formula.

[0037] Himalayan cedarwood essential oil is made from cedar (Cedrus deodara) wood grown at altitudes of 3000-4000m in the Himalayas. It is extracted using steam distillation (distillation temperature 105-110℃, distillation time 3-4h) with a purity ≥99%. Its α-cedrol content (≥25%) can act on the central nervous system, lowering levels of the anxiety hormone cortisol. It also has a mild, non-irritating scent, making it suitable for long-term external use.

[0038] Base oil:

[0039] Sweet almond oil: Cold-pressed virgin, contains vitamin E and linoleic acid, has a refreshing feel and is easily absorbed by the skin, making it suitable for sensitive skin;

[0040] Jojoba oil: Similar in structure to human sebum, it has strong water-locking properties and can prolong the effect time of essential oils on the skin surface;

[0041] Grape seed oil: Rich in proanthocyanidins, which help enhance antioxidant effects, and has a light texture that avoids greasiness.

[0042] When blending base oils, control the ratio of sweet almond oil to jojoba oil to 1:0.5-2 to balance absorption rate and water-locking effect.

[0043] Synergistic Sleep-Aid Essential Oils:

[0044] Lavender essential oil (purity ≥98%, linalool content ≥35%): a classic sleep aid ingredient that can work synergistically with cedarwood essential oil to reduce nerve excitability;

[0045] Roman chamomile essential oil (purity ≥97%, chamomile content ≥0.8%): enhances calming effects and relieves skin sensitivity;

[0046] Bitter orange blossom essential oil (purity ≥98%, nerol content ≥20%): soothes emotions, improves anxiety-related insomnia, and complements the aroma of cedarwood essential oil.

[0047] Antioxidants:

[0048] Vitamin E (D-α-tocopherol, purity ≥96%) or rosemary extract (salvia oleracea acid content ≥5%) can inhibit the oxidation of unsaturated components in essential oils, preventing odor deterioration and reduced activity.

[0049] In the following examples, the amount of each component is expressed in "parts by weight", the preparation process conforms to the process parameters, and the performance testing methods are uniform.

[0050] Example 1: Basic Formula (Single Base Oil + Lavender)

[0051] Components Dosage Himalayan cedarwood essential oil 2 Sweet almond oil (base oil) 93 Lavender essential oil 5

[0052] Preparation steps:

[0053] S1: Place 93 parts of sweet almond oil in a mixing bowl and stir at a constant temperature of 28°C for 8 minutes;

[0054] S2: Add 2 parts Himalayan cedarwood essential oil and 5 parts lavender essential oil, stir at 250 rpm for 15 minutes;

[0055] S3: No antioxidants, dispensed after stirring.

[0056] How to use:

[0057] 1.5 hours before bedtime, apply 1mL to the wrists and soles of the feet and massage until absorbed.

[0058] Example 2: Blended base oil + lavender + Roman chamomile

[0059] Components Dosage Himalayan cedarwood essential oil 3 Sweet almond oil 45 Jojoba oil 45 Lavender essential oil 3 Roman chamomile essential oil 2 Vitamin E 0.5

[0060] Preparation steps:

[0061] S1: Mix 45 parts sweet almond oil and 45 parts jojoba oil, and stir at a constant temperature of 30°C for 10 minutes.

[0062] S2: Add 3 parts Himalayan cedarwood essential oil, 3 parts lavender essential oil, and 2 parts Roman chamomile essential oil, and stir at 280 rpm for 18 minutes;

[0063] S3: Add 0.5 parts vitamin E, continue stirring for 6 minutes, then dispense into containers.

[0064] How to use:

[0065] One hour before bedtime, apply 1.5mL to the neck and soles of the feet.

[0066] Example 3: Optimal formulation containing bitter orange blossom and antioxidants

[0067] Components Dosage Himalayan cedarwood essential oil 2.5 Grapeseed oil 90 Lavender essential oil 3 Bitter orange blossom essential oil 1.2 Rosemary extract 0.3

[0068] Preparation steps:

[0069] S1: 90 parts grape seed oil, stirred at 32℃ for 7 minutes;

[0070] S2: Add 2.5 parts cedarwood essential oil, 3 parts lavender essential oil, and 1.2 parts bitter orange blossom essential oil, and stir at 220 rpm for 12 minutes;

[0071] S3: Add 0.3 parts of rosemary extract, stir for 5 minutes, and then dispense into containers.

[0072] How to use:

[0073] Two hours before bedtime, apply 0.8 mL to the wrists and neck.

[0074] Example 4: Optimal Formulation

[0075] Components Dosage Himalayan cedarwood essential oil 2 Sweet almond oil 60 Jojoba oil 30 Lavender essential oil 4 Roman chamomile essential oil 1 Vitamin E 0.6

[0077] Preparation steps:

[0078] S1: 60 parts sweet almond oil + 30 parts jojoba oil, stir at 35℃ for 5 minutes;

[0079] S2: Add 2 parts cedarwood essential oil, 4 parts lavender essential oil, and 1 part Roman chamomile essential oil, and stir at 300 rpm for 10 minutes;

[0080] S3: Add 0.6 parts of vitamin E, stir for 8 minutes, and then dispense into individual containers.

[0081] Sleep aid effect test:

[0082] Test subject:

[0083] Sixty individuals aged 18-55 with insomnia (PSQI sleep quality index ≥10) were selected and randomly divided into four groups (corresponding to four case studies), with 15 people in each group, and used the treatment for 28 consecutive days.

[0084] Test metrics:

[0085] Sleep onset time, sleep duration, and PSQI score (out of 21 points, the lower the score, the better the sleep).

[0086] Test results:

[0087] Group Sleep onset time (min, before / after use) Sleep duration (h, before / after use) PSQI score (before / after use) Example 1 45±8 / 22±5 5.2±0.6 / 6.8±0.5 12.3±1.5 / 7.1±1.2 Example 2 48±7 / 18±4 5.0±0.7 / 7.2±0.4 13.1±1.3 / 6.5±1.0 Example 3 42±9 / 20±5 5.5±0.5 / 7.0±0.6 11.8±1.4 / 6.8±1.1 Example 4 46±8 / 15±3 5.1±0.6 / 7.5±0.3 12.7±1.2 / 5.9±0.9

[0088] Conclusion: All examples significantly improved sleep, with example 4 (optimal ratio) showing the best effect, reducing sleep onset time by 67% and PSQI score by 54%, proving that the combination of cedarwood essential oil and sleep-aiding essential oil has a synergistic effect.

[0089] Stability test:

[0090] Test conditions: Store at 25℃ in a sealed container away from light, and periodically test the pH value and the content of active ingredients (α-cedrol, linalool).

[0091] Test results:

[0093] Storage time pH value (required 5.5-7.0) α-Cedrol retention rate (%, requirement ≥90%) Linalool retention rate (%, requirement ≥90%) 0 months 6.2 100 100 3 months 6.1 96.5 95.8 6 months 6.0 93.2 92.5

[0095] Conclusion: After 6 months of storage, the pH value remained stable within the range of 5.5-7.0, and the retention rate of active ingredients was ≥93%, meeting the stability requirements.

[0096] Skin safety test:

[0097] Test method: Human skin occlusive patch test was conducted on 4 groups of examples (n=30, 24h application).

[0098] Test results: No irritation reactions such as redness, swelling, or itching were observed in any of the subjects, and the skin irritation score was 0 (out of 4), demonstrating the high safety of the formula.

[0099] Comparative verification:

[0100] Two sets of comparative examples were set up to compare the present invention:

[0101] Comparative Example 1 (without Himalayan cedarwood essential oil) Dosage Sleep aid effect (PSQI score, after use) Sweet almond oil 95 - Lavender essential oil 5 9.8 ± 1.4 (significantly higher than 7.1 in Example 1)

[0102] as well as:

[0103] Comparative Example 2 (Cedarwood essential oil content exceeded the standard) Dosage Stability (6-month α-cedrol retention) Himalayan cedarwood essential oil 8 78.3% (below the required 90%) Sweet almond oil 87 - Lavender essential oil 5 -

[0105] in conclusion:

[0106] Comparative Example 1: Without cedarwood essential oil, the sleep-aiding effect was significantly reduced, proving that cedarwood essential oil is the core active ingredient;

[0107] Comparative Example 2 showed that the amount of cedarwood essential oil used exceeded the standard (>5 parts), resulting in a significant decrease in stability, proving that the dosage range of 0.5-5 parts is reasonable.

[0108] This invention is the first to use Himalayan cedarwood essential oil as the core sleep-aiding ingredient, which works synergistically with essential oils such as lavender and chamomile to enhance the calming effect.

[0109] Optimize the base oil ratio and preparation process to ensure skin absorption efficiency and ingredient uniformity;

[0110] Add antioxidants and limit storage conditions to ensure that the retention rate of active ingredients is ≥90% within 6 months;

[0111] The formula has a pH value of 5.5-7.0, which is consistent with the physiological environment of the skin, making it highly safe and suitable for long-term external use.

[0112] This invention can be widely applied to external sleep aid products such as essential oil creams and rollerball bottle essential oils, providing a safe and efficient solution for people with sleep disorders.

[0113] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A sleep-aiding essential oil formula containing Himalayan cedarwood, characterized in that, By weight, it contains the following components: Himalayan cedarwood essential oil 0.5-5 parts, carrier oil 80-95 parts, and sleep-aiding essential oil 1-10 parts; The sleep-aiding essential oil is selected from at least one of lavender essential oil, chamomile essential oil, and sandalwood essential oil; This formula is used to prepare topical essential oil products with sleep-aiding properties.

2. The sleep-aiding essential oil formula according to claim 1, characterized in that, The base oil is selected from at least one of sweet almond oil, jojoba oil, and grapeseed oil; When the base oil is a blend, the weight ratio of sweet almond oil to jojoba oil is 1:0.5-2.

3. The sleep-aiding essential oil formula according to claim 1, characterized in that, The synergistic sleep-aiding essential oil contains 1-5 parts by weight of lavender essential oil, and the weight ratio of lavender essential oil to Himalayan cedarwood essential oil is 1:0.2-1.

4. The sleep-aiding essential oil formula according to claim 3, characterized in that, The sleep-aiding essential oil also contains Roman chamomile essential oil, with a content of 0.5-3 parts by weight, and the weight ratio of Roman chamomile essential oil to Himalayan cedarwood essential oil is 1:0.5-3.

5. The sleep-aiding essential oil formula according to any one of claims 1-4, characterized in that, It also contains 0.1-1 parts by weight of an antioxidant, said antioxidant being vitamin E or rosemary extract.

6. The sleep-aiding essential oil formula according to any one of claims 1-4, characterized in that, The preparation method includes the following steps: S1: Stir the base oil at a constant temperature of 25-35℃ for 5-10 minutes; S2: Add Himalayan cedarwood essential oil and sleep-aiding essential oil in sequence, and stir at 200-300 rpm for 10-20 minutes; S3: If an antioxidant is to be added, add it after step S2 and continue stirring for 5-8 minutes to obtain the final product.

7. The sleep-aiding essential oil formula according to claim 1, characterized in that, The sleep-aid essential oil product is to be applied to the wrists, neck, or soles of the feet 1-2 hours before bedtime, with a single application of 0.5-2 mL.

8. The sleep-aiding essential oil formula according to any one of claims 1-7, characterized in that, The preferred proportions of each component, by weight, are as follows: Himalayan cedarwood essential oil 1-3 parts, base oil 85-92 parts, sleep-aiding essential oil 2-6 parts, antioxidant 0.2-0.8 parts.

9. The sleep-aiding essential oil formula according to claim 1, characterized in that, The sleep-aiding essential oil also contains bitter orange blossom essential oil, with a content of 0.3-2 parts by weight, and the weight ratio of bitter orange blossom essential oil to Himalayan cedarwood essential oil is 1:1-2.

5.

10. The sleep-aiding essential oil formula according to any one of claims 1-9, characterized in that, The pH value of this formula is 5.5-7.0, and after 6 months of storage at 25℃ in the dark, the retention rate of the active ingredients in the essential oil is ≥90%.

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