A sunscreen preparation for electric high-altitude work
A high-altitude operation and electric power technology, which is applied to skin care preparations, cosmetic preparations, cosmetic preparations, etc., can solve the problems of poor safety, high pigmentation price, etc., and achieves low production cost, remarkable and reliable curative effect, and no toxic side effects
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Embodiment 2
[0043] Study on the safety of the sunscreen preparation of the present invention
[0044] The cosmetic of the present invention belongs to the preparation for external use, and its safety research is carried out. The sunscreen formulation of Example 1 was used.
[0045] Fix the test rabbit in the fixed box, apply 0.5g of the test sample on the skin that has been depilated on the right side, and the smear area is (2.5×2.5)cm 2 , Apply once a day for 14 days. From the second day, the hair should be clipped before each application, and the residual samples should be removed with warm water, and the results should be observed after 1 hour. Apply 0.5mL of normal saline to the left control area as a control, and score according to the skin irritation reaction scoring standard, and calculate each test per day Rabbit points mean, determine the intensity of skin irritation. The experimental results show that: the back of the tested animals has no redness, swelling, festering, and bl...
Embodiment 1
[0047] The sunscreen efficacy measurement of the embodiment of the present invention 1 preparation UVA zone
[0048] Method: The absorbance and light transmittance of the samples were measured by double-beam ultraviolet / visible spectrophotometer, quartz cell tape sample, and quartz plate tape sample, and their sunscreen efficacy in the UVA area was comprehensively evaluated.
[0049] Experiment content:
[0050] 1. Absorbance measurement
[0051] Turn on the power supply of the UV spectrophotometer instrument and preheat it for 15 minutes, set the detection wavelength as: 350nm, 360nm, 370nm, 380nm, 390nm, place the empty quartz cell with tape on the sample optical path and the reference optical path, adjust the instrument Zero point; place the sample cell to be tested in the sample optical path, and place another quartz cell with adhesive tape in the reference optical path, measure the UV absorbance value A of 5 wavelengths, calculate the arithmetic mean value of the measured...
Embodiment 4
[0061] Zhang Gong, an electrical engineering engineer, due to work needs to be exposed to the outdoors, the skin is severely exposed to the sun, and the effect is not good after using many skin care products. Slowly improve, the skin returns to a healthy state.
[0062] Master Wei, an electric worker, has rough skin and dark complexion due to his work. Before exposure to the sun, his skin often had red spots and itching. After applying the preparation prepared in Example 1 of the present invention, it has a good sunscreen effect. After that, the face no longer has red spots, the skin is no longer sensitive due to sun exposure, and the skin tone improves. Continue to use it, and the sunscreen effect is obvious.
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