Hydrolyzed Proteins (e.g., Hydrolyzed Silk, Hydrolyzed Keratin)

Category: Hair conditioning agent, Skin conditioning agent

Brief description: Hydrolyzed proteins are proteins that have been broken down into smaller peptide fragments, which can more easily penetrate the hair shaft or skin's surface. They help to strengthen, moisturize, and add shine to hair, and can also provide moisturizing and smoothing benefits to the skin.

Benefits: Strengthens and conditions hair, reduces breakage, enhances shine, and provides moisture to both hair and skin.

Skin type suitability/concerns: Suitable for all hair and skin types. Particularly beneficial for dry or damaged hair, and dry or aging skin.

Target audience: Those with damaged, dull, or dry hair, and those looking to moisturize and smooth their skin.

Chemical composition: Hydrolyzed proteins are made up of amino acids, which are the building blocks of proteins. They're produced by breaking down larger proteins with water, a process known as hydrolysis.

Physical aspect: Typically, a clear to slightly hazy liquid or powder, depending on the specific type of hydrolyzed protein and its concentration.

Compatibility: Compatible with most other ingredients used in hair and skin care formulations.

Concentration: Typically used at concentrations between 0.5% and 5% in hair and skin care products.

Side effects/adverse reactions: Generally considered safe and non-irritating. However, individuals with protein sensitivity may experience irritation or breakouts.

Regulatory status: Considered safe for use in cosmetics by the CIR Expert Panel.

Sustainability/ethical considerations: Hydrolyzed proteins are often derived from natural sources such as silk, keratin (from sheep's wool), soy, or wheat. The ethical considerations may depend on the sourcing and processing methods of these natural ingredients.