Neutrogena Restore Advanced Growth Support Hair Serum - 1.7 fl. oz: Damage Repair, For All Hair Types, Liquid Form

Water is a common solvent used in cosmetic formulations. It helps dissolve other ingredients and provides a base for the product. It does not have any direct benefits or risks.

Pentylene Glycol is a synthetic humectant and solvent. It helps to retain moisture in the skin and improve the texture of the product. It is generally considered safe for use in cosmetics.

PEG-40 Hydrogenated Castor Oil is an emulsifier and surfactant. It helps to mix oil and water-based ingredients and improve product texture. It is generally safe but may contain impurities from the ethoxylation process.

Panthenol is a provitamin of B5 known for its moisturizing and soothing properties. It helps to improve skin hydration and reduce inflammation. It is widely used in cosmetics for its beneficial effects on skin and hair.

Niacinamide is a form of Vitamin B3 that offers multiple skin benefits. It helps to improve skin elasticity, enhance barrier function, and reduce inflammation. It is highly regarded for its ability to improve overall skin health.

Caffeine is known for its antioxidant properties and ability to reduce puffiness. It helps to improve circulation and reduce the appearance of dark circles and puffiness. It is commonly used in eye creams and serums for its energizing effects.

Feverfew extract is known for its anti-inflammatory and antioxidant properties. It helps to soothe irritated skin and protect against environmental stressors. It is beneficial for sensitive and reactive skin types.

Arginine is an amino acid that plays a role in collagen production and skin repair. It helps to improve skin elasticity and hydration. It is beneficial for maintaining healthy skin structure.

Hydrolyzed Collagen is a protein that helps to improve skin elasticity and hydration. It is used in cosmetics to enhance skin texture and reduce the appearance of fine lines. It is beneficial for maintaining youthful-looking skin.

Bisabolol is a natural compound known for its soothing and anti-inflammatory properties. It helps to calm irritated skin and reduce redness. It is often used in products for sensitive skin due to its gentle nature.

Glycerin is a well-known humectant that attracts moisture to the skin. It helps to keep the skin hydrated and improve its barrier function. It is widely used in cosmetics for its moisturizing properties.

Mango extract is rich in vitamins and antioxidants that nourish the skin. It helps to protect against environmental damage and improve skin radiance. It is beneficial for maintaining healthy and glowing skin.

Acetyl Dipeptide-31 Amide is a synthetic peptide used for its skin-conditioning properties. It helps to improve skin texture and appearance. Its specific benefits and risks are not well-documented.

Isochrysis Galbana Extract is derived from microalgae and used for its potential skin benefits. It is believed to have antioxidant properties, though specific effects are not well-documented. It is generally considered safe for use in cosmetics.

Centella Asiatica is known for its healing and anti-inflammatory properties. It helps to soothe irritated skin and promote wound healing. It is beneficial for sensitive and damaged skin.

Propanediol is a glycol used as a solvent and humectant in cosmetics. It helps to improve product texture and enhance moisture retention. It is generally considered safe for use in personal care products.

Hydroxyethylcellulose is a thickening agent used to improve product consistency. It helps to stabilize formulations and enhance texture. It is generally considered safe for use in cosmetics.

Disodium EDTA is a chelating agent used to improve product stability. It helps to bind metal ions and prevent product degradation. It is generally considered safe for use in cosmetics.

Sodium Benzoate is a preservative used to prevent microbial growth in cosmetics. It helps to extend the shelf life of products and ensure safety. It is generally considered safe at low concentrations.

Citric Acid is used to adjust the pH of cosmetic formulations. It helps to maintain product stability and enhance the effectiveness of preservatives. It is generally considered safe for use in cosmetics.

Sodium Hydroxide is used to adjust the pH of cosmetic formulations. It is a strong alkaline compound that can cause irritation if not properly neutralized. It is used in small amounts to ensure product safety.