No, you don't.
Retinol, also known as A alcohol, vitamin A alcohol. It has a certain degree of photosensitivity, but it is only sensitive to ultraviolet rays, and after absorbing ultraviolet rays, it will cause changes such as irritation becomes stronger; it will not be affected by visible light.
The lights in daily life are basically LED lights and do not produce ultraviolet rays. Therefore, there is no need to avoid light when using retinol.
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Retinol acts as an anti-aging agent and skin conditioner in cosmetics and has the following effects:
Improve skin aging: Retinol can increase the thickness of the epidermis, promote the synthesis of type I collagen, GAG glycosaminoglycans, fibronectin and proelastin, regulate the homeostasis of the extracellular matrix of the dermis, enrich the deposition of extracellular matrix in the skin, and promote the proliferation of endothelial cells, etc., so that the skin looks more plump and elastic.
Wrinkle improvement: 0.075% and above concentration of retinol has the effect of improving fine lines.
Regulates skin tone: improves pigmentation.
The above effects have been confirmed by human efficacy evaluation tests, and the specific use effect varies from person to person.
According to the "List of Used Cosmetic Raw Materials (2021 Edition)" issued by the Food and Drug Administration, the highest historical use concentration of its resident products is 1%. Within this range of concentration additions, it is safe for the skin.
However, due to the greater irritation of retinol, especially when the concentration of use is higher or the skin is more sensitive, it is easy to make the skin red, dry and peeling, tingling, darkening and other skin intolerance, it is recommended to choose the corresponding concentration of products according to skin tolerance, do not pursue high concentration.
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Yan An Tang well-known skin care science public number
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