Water (Aqua /Eau), Propanediol, Salicylic Acid, Betaine, Panthenol, PEG-40 Hydrogenated Castor Oil, Phenoxyethanol, Polyquaternium-37, Hexylene Glycol, Capryloyl Glycine, Citronellyl Methylcrotonate, Sodium Hydroxide, Ethylhexylglycerin, Xylitylglucoside, Trisodium Ethylenediamine Disuccinate.

Yes. Apply only to the scalp and avoid heavy saturation of the lengths if your colour is freshly done. Salicylic acid at this concentration in a rinse-off treatment has minimal effect on colour.

You don't need both. The salicylic acid treatment suits oily, flaky, or dandruff-prone scalps. The glycolic acid scrub suits dry, congested, or product-heavy scalps. Use the one that matches your concern rather than both at once.

1 to 2 times a week. Once weekly is enough for most people; twice weekly for a very oily scalp or heavy product use. More than that can disrupt the scalp's natural balance.