Activated Resorcinol™ is
4-butylresorcinol is not
resorcinol which is used to Hair dye and FDA are not allowed to use in skin care
Activated Resorcinol™ or
4-butylresorcinol is safe for use on the skin, up to 2% for rinses like soaps, and up to 1% for skin products. such as creams, lotions, text on product website information