4-Hexylresorcinol, abbreviated as HR, has two phenolic groups that can undergo redox reactions to neutralize free radicals and reduce oxidative stress damage to cells and tissues. 

Alkyl resorcinol is the best platform for whitening ingredients, while hexyl resorcinol is the safest choice among alkyl resorcinol derivatives, safer and more effective than hydroquinone and quercetin, and is one of the most powerful whitening ingredients.

efficacy of hexylresorcinol is as follows:

1）Inhibit tyrosinase activity

2）Inhibit melanin production

3）Antioxidant (can promote glutathione, glutathione peroxidase, and glutathione reductase to achieve strong antioxidant effects).

4）*Glutathione is an important antioxidant and free radical scavenger in the body that protects cells from oxidative damage. It helps to enhance the tyrosinase activity of human melanoma cells when consumed

5）Synergistic enhancement (complementary to whitening ingredients such as niacinamide).

6）Mild and fast (low cytotoxicity, supported by long-term use)

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