Some hair growth shampoos may contain small amounts of sodium chloride or citric acid to help cleanse the scalp and hair. However, premium hair growth shampoos are formulated with balanced concentrations of these ingredients to minimise potential irritation, making them suitable for most hair types, including sensitive scalps. If you have concerns about specific ingredients, always check the product label or contact the manufacturer for more information. High-quality hair growth shampoos often prioritise the use of nourishing, natural ingredients to support healthier hair growth while being gentle on the scalp.