A kind of sunscreen and preparation method thereof

Abstract

The invention belongs to the field of cosmetics, and in particular relates to a sunscreen and a preparation method thereof. The sunscreen provided by the invention belongs to the water-in-oil type. At the same time, the physical sunscreen agent alkyl silicon is used to process nano-zinc oxide, oil-dispersed nano-titanium dioxide, and chemical sunscreens such as ethylhexyl methoxycinnamate and diethylamino hydroxybenzoyl Hexyl benzoate, natural plant sunscreen agent wild soybean seed extract, sandalwood extract, lotus leaf extract, the combination of the three has better safety and stability, and is less irritating, significantly enhancing the sun protection of the skin performance. Moreover, the addition of natural plant sunscreens reduces the amount of chemical sunscreens, and also has after-sun repairing effects, better compatibility with the skin, and good mildness.

Description

technical field [0001] The invention belongs to the field of cosmetics, and in particular relates to a sunscreen and a preparation method thereof. Background technique [0002] Sun protection is an essential step in skin care during the day, especially for those who pursue bright and white skin, sun protection products are a must for their home and travel. When the skin is exposed to excessive ultraviolet rays, it will damage the epidermal cells; activate tyrosinase, accelerate pigment synthesis, destroy the skin's moisturizing function, make the skin dry, damage the elastic fibers in the dermis, and cause fine lines. Under strong exposure, it can also cause skin inflammation and burns. When there are abnormalities, it will become pigmented skin cancer, etc. After a one-time long-term ultraviolet irradiation of the skin, chronic erythema (sunburn) appears on the skin after several hours to more than 10 hours, the color is bright red, the skin is edema, and blisters will ap...

AI Technical Summary

Problems solved by technology

The commercially available sunscreen lotion products are mainly divided into two types, O / W type and W / O type. The skin feeling of oil-in-water type sunscreen products is relatively refreshing, but its disadvantage is that it is not water-resistant, and it is easy to fall off when sweating in summer, and it cannot last long. The effect of sun protection

The water-in-oil type sunscreen can achieve a higher SPF, and is resistant to water and sweat and is not easy to dissolve, but its skin feels thick and sticky, and the user experience in summer is poor.

Moreover, unstable phenomena are often found in commercially available products, and problems such as delamination occur after long-term storage

[0005] Chinese patent application 201710692861.4 discloses a refreshing sunscreen, which includes caprylic / capric triglyceride, octyl methoxycinnamate, butylmethoxydibenzoylmethane, titanium dioxide, nano titanium dioxide powder, nano Zinc oxide powder, etc. The sunscreen is an oil-in-water type. Butylmethoxydibenzoylmethane, zinc oxide, and titanium oxide are used as chemical sunscreen and physical sunscreen components respectively. The resulting sunscreen has a refreshing and non-greasy texture, and the sunscreen effect Excellent, but this kind of sunscreen will cause some irritation to the skin, and it is easy to cause the skin to be sticky and greasy, and the repair effect after sun exposure is poor

[0006] To sum up, it can be seen that the existing technology generally has problems such as unstable sun protection effect, easy to cause certain irritation to the skin, and poor repair effect after sun exposure.

Images