Now people have a lot of choices in skin care, just sunscreen ingredients are more than 10 kinds, but some skin care products seem to skin care is actually more will hurt our skin. So how do we choose the right skin care products for our skin? Let’s talk about benzophenone-4, an important ingredient in skin care products.
What is benzophenone-4?
Benzophenone-4 is a benzophenone compound, referred to as BP-4, chemical formula C14H12O6S. It is a white or light yellow powder at room temperature and can effectively absorb UV light of 285 to 325 Im. As A broad spectrum ultraviolet absorber, BP-4 has the advantages of high absorption rate, non-toxic, non-teratogenic effect, good light and thermal stability, etc., UV absorber BP-4 can absorb UV-A and UV-B at the same time, is a class I sunscreen approved by the United States FDA, the United States and European countries have a high frequency of use, mainly used in sunscreen cream and other sunscreen cosmetics.
Uv absorbent BP-4 is non-toxic, non-flammable, non-explosive, easy to absorb moisture in the air, is an excellent performance of acidic aqueous UV absorbent, can strongly absorb UV light. It is widely used as ultraviolet absorber for water-based polymer coatings and purple paint to prevent the photocatalytic oxidation of water-based polymer coatings and purple paint; It is a good sunscreen for cosmetics and a UV absorber to improve the weather resistance of woolen fabrics.
Benzophenone is widely used in household items such as sunglasses, food packaging, laundry and cleaning products to protect against UV exposure. It can contaminate drinking water and migrate from food packaging to food. Benzophenone is used in some food packaging inks and may migrate to food. Benzophenone occurs naturally in certain foods (such as wine grapes and Muscat grapes) and is added to others as a flavoring agent.
In personal care products, benzophenone is used as a fragrance enhancer or to prevent products such as soaps from losing their fragrance and color under ultraviolet light. Benzophenone derivatives such as BP2 and oxybenzone (BP3) and benzophenone-4 (BP-4) are used in sunscreens. Oxybenzone is used as an ultraviolet absorber and stabilizer, especially in plastics and sunscreens. Benzophenone and oxybenzone are also used in nail polish and lip balm.
What is benzophenone-4 used for in skin care?
Uv absorbent BP-4 has the advantages of good light and heat stability, and is widely used in sunscreen cream, cream, honey, lotion, oil and other sunscreen cosmetics. Especially suitable for sunscreen, lotion, paint, the general dosage is 0.1-0.5%. The usual dosage is 0.2-1.5%.
Uv absorber BP-4 is easily soluble in water, and the aqueous solution is acidic, so it needs to be neutralized during use. Solution PH greater than 9 will cause the absorption wavelength to narrow, the main application of daily sunscreen and other skin care products to prevent skin aging caused by ultraviolet light.
What is benzophenone-4 used for in skin care?
Post time: Apr-28-2024