Biotop 911 Quinoa Apple Cider Vinegar Foaming Rinse is a rinse-out foam that removes product build-up, excess oil and hard-water residue after shampooing, while helping bring the hair and scalp back to their natural pH.

Apple cider vinegar does the clarifying and pH work, which helps the cuticle lie flat for more shine. Quinoa seed extract, panthenol and vitamin E keep the lengths soft, so it detoxes without the squeaky, stripped feel of a harsh clarifier.

After shampooing, apply the foam to the scalp, spread it through the lengths, leave 1 to 3 minutes and rinse before conditioner or mask. Biotop recommends it once or twice a week, or straight after a colour service. Vegan, colour-safe, and free of SLS, SLES, parabens and sodium chloride.

Water (Aqua), SD Alcohol 40, PEG-12 Dimethicone, PEG-7 Glyceryl Cocoate, Cocamidopropyl Betaine, Cetrimonium Chloride, Stearamidopropyl Dimethylamine, PEG-40 Hydrogenated Castor Oil, Propylene Glycol, Citric Acid, Glycerin, Caprylyl/Capryl Glucoside, Quaternium-80, Vinegar, Chenopodium Quinoa Seed Extract, Phenoxyethanol, Sodium PCA, Tocopheryl Acetate, Caprylyl Glycol, Chlorphenesin, Panthenol, Polyquaternium-7, Disodium EDTA, Decyl Alcohol, Sodium Benzoate, Caprylyl Alcohol, FD&C Yellow No. 6 (CI 15985), Amaranthus Caudatus Seed Extract, Glucose, Prunus Cerasus Extract, Fragrance (Parfum), Benzyl Salicylate, Citronellol, Citrus Aurantium Peel Oil, Geraniol, Tetramethyl Acetyloctahydronaphthalenes, Hexamethylindanopyran, Hexyl Cinnamal, Limonene, Linalool, Linalyl Acetate, Geranyl Acetate