Abstract: An amino acid-based scalp and hair care composition. The composition comprises the following components, by weight percentage: Long carbon chain fatty acyl amino acid-based surfactants 0.5-5%, higher aliphatic alcohols 0.5-15%, and a solvent. A scalp and hair care product containing the amino acid-based scalp and hair care composition and a preparation method thereof. The amino acid-based scalp and hair care composition uses the long carbon chain fatty acyl amino acid-based anionic surfactants as the active ingredient. When applied to the scalp and used as a hair care product, the composition can repair the hydrophobicity of the hair surface through the long carbon chain, achieve the hair care effect, and reduces irritation to the scalp.