OUAI Thick Hair Shampoo - Full Size - 10 fl oz - Ulta Beauty: Strengthening, Shine Enhancing, Eucalyptus, Rosemary

Sodium C14-16 Olefin Sulfonate is a surfactant used for its cleansing properties. It can be harsh on the scalp, stripping natural oils and causing dryness. It is often considered a less gentle alternative to sulfate-free options.

Cocamidopropyl Betaine is a mild surfactant derived from coconut oil. It is used to reduce irritation potential of other surfactants and improve foam quality. It is generally considered safe and gentle for most hair types.

Parfum is a term used for synthetic fragrances that can contain numerous undisclosed chemicals. These can include allergens and potential endocrine disruptors. The lack of transparency makes it difficult to assess safety.

Panthenol is a form of vitamin B5 that is used for its moisturizing properties. It helps to improve hair elasticity and moisture retention. It is well-tolerated and beneficial for hair health.

Hydrolyzed Keratin is a protein that helps to strengthen and repair hair. It penetrates the hair shaft to improve elasticity and reduce breakage. It is beneficial for damaged or chemically treated hair.

Shea Butter is a natural fat extracted from the nuts of the shea tree. It is rich in vitamins and fatty acids, providing deep conditioning and moisture. It is highly beneficial for dry and damaged hair.

Avocado Oil is rich in vitamins and fatty acids, making it an excellent moisturizer. It helps to nourish and strengthen hair, improving overall health and shine. It is suitable for all hair types, especially dry or damaged hair.

Glycerin is a humectant that attracts moisture to the hair and scalp. It helps to maintain hydration and prevent dryness. It is widely used in hair care for its moisturizing properties.

Amodimethicone is a silicone used for its conditioning properties. It can cause buildup on the hair over time, leading to dullness and brittleness. It is not water-soluble, making it difficult to remove without clarifying shampoos.

Sodium Chloride is used as a thickener in shampoos. It can cause dryness and irritation to the scalp, especially in high concentrations. It is not recommended for sensitive or dry scalps.

Phenoxyethanol is a preservative used to prevent microbial growth. It can cause skin irritation and allergic reactions in some individuals. It is considered a potential endocrine disruptor.