Arbutin: Arbutin is a very popular skin-whitening ingredient. The principle of whitening is to inhibit tyrosinase activity.

Arbutin has photosensitivity, so it is often said that "products containing arbutin can only be used at night and people will turn black when use it during the day."

However, in fact, only high concentrations of arbutin have photosensitivity, and the maximum addition of arbutin in skin care products is limited to 7%, so there is no need to worry about photosensitivity. Arbutin can also be used during the day.

Vitamin C: The biggest role is to "restore and repair cells", but due to the low stability of vitamin C, it is prone to oxidation and is not easily absorbed by the skin.

However, due to technological breakthroughs and innovations, "L-Vitamin C", "Esterified Vitamin C", and "Vitamin C Glycosyl Derivatives" and other vitamin C have smaller molecules and is more stable.

Kojic acid: In response to the penetration of ultraviolet light, Kojic acid is used to prevent the activation of tyrosine and reduce the formation of melanin. Kojic acid combined with L-Vitamin C can also exert a double skin-whitening effect.