Tea-Lauroyl Keratin Amino Acids: What Is It, Cosmetic Uses, Benefits & Side Effects

Curious about this ingredient? In this article we're explaining exactly what it is and why it's used within cosmetic formulations.
Updated on: June 30, 2025
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We verify all information on this page using publicly available nomenclature standards from The Personal Care Products Council (PCPC), the European Commission's CosIng database and documentation provided directly by ingredient manufacturers. Our analysis is based on technical data from these sources to ensure accuracy and reliability.

What Is Tea-Lauroyl Keratin Amino Acids?

Tea-Lauroyl Keratin Amino Acids is a blend of naturally sourced keratin building blocks that have been linked to lauric acid and then neutralized with triethanolamine (TEA) to form a water-friendly salt. Keratin comes from wool or other animal hair while lauric acid is found in coconut and palm oils. Joining them creates a gentle surfactant that also carries the hair-loving traits of keratin. This hybrid ingredient appeared in the late 1990s when formulators looked for milder cleansers that could add conditioning benefits without extra steps.

The manufacturing process starts with breaking down keratin into small amino acids through controlled hydrolysis. Separately lauric acid is converted into its reactive chloride so it can attach to the amino acids, forming lauroyl keratin peptides. Finally TEA is added to turn the compound into a salt that dissolves easily in water-based products.

You will often spot Tea-Lauroyl Keratin Amino Acids in shampoos, co-wash formulas, rinse-out and leave-in conditioners, hair masks, anti-frizz serums, moisturizing body washes and some gentle facial cleansers. Its dual role as a cleanser and conditioner lets brands create simpler sulfate-free products that leave hair and skin feeling soft.

Tea-Lauroyl Keratin Amino Acids’s Cosmetic Benefits/Uses

This multifunctional ingredient improves both the feel and performance of many personal care products

  • Antistatic – helps reduce static electricity on hair strands so styles stay smoother and less flyaway
  • Cleansing – acts as a mild surfactant that lifts away dirt oil and buildup without stripping natural moisture
  • Hair Conditioning – deposits keratin-rich peptides that fill in weak spots along the cuticle leaving hair stronger shinier and easier to detangle
  • Skin Conditioning – binds water to the skin surface and forms a light protective film that feels silky and non-greasy

Who Can Use Tea-Lauroyl Keratin Amino Acids

This gentle cleansing conditioner is generally well tolerated by all skin and hair types including oily, dry, combination and sensitive. Its mild nature and moisturizing peptides make it especially appealing for people who find sulfates too harsh. Those with a known allergy to animal proteins such as wool or keratin should avoid it as it could trigger irritation.

Because the keratin portion is sourced from animal hair Tea-Lauroyl Keratin Amino Acids is not considered vegan or vegetarian friendly. Consumers who follow plant based lifestyles will want to choose alternative surfactants made with synthetic or plant proteins.

No studies have flagged this ingredient as a concern for women who are pregnant or breastfeeding. Still, this is not medical advice and anyone expecting or nursing should ask a healthcare provider before adding new personal care products just to be safe.

The ingredient does not increase photosensitivity so there is no added risk of sunburn when it is used in daytime formulas.

Potential Side Effects/Adverse Reactions

Reactions to topical Tea-Lauroyl Keratin Amino Acids differ from person to person. The effects below are possible but uncommon when the ingredient is used at standard cosmetic levels.

  • Mild scalp or skin irritation in individuals allergic to keratin or wool derivatives
  • Redness or itching if used in a formula with a very high pH or combined with aggressive exfoliants
  • Eye stinging when a high concentration shampoo or cleanser accidentally enters the eyes

If any discomfort or unusual reaction develops stop using the product and consult a healthcare professional.

Comedogenic Rating

Rating: 1/5 Tea-Lauroyl Keratin Amino Acids is highly water soluble and rinses away cleanly, so it is very unlikely to sit in pores or form an occlusive film that could trap oil and debris. The lauric chain is bound to amino acids, greatly reducing any pore-clogging risk compared with pure fatty acids. For these reasons it earns a low score of 1.

Suitable for acne-prone or breakout-prone skin in most cases.

Keep in mind the finished formula matters; if the product also contains heavier butters or waxes the overall comedogenic potential may rise even though this particular ingredient is low risk.

Summary

Tea-Lauroyl Keratin Amino Acids works as a gentle cleanser, antistatic agent, hair conditioner and skin conditioner all in one. Its surfactant portion lifts away grime while the keratin-derived peptides bind to damaged spots on hair and skin, adding strength smoothness and light hydration. Static is reduced because the amino acids neutralize charges along hair shafts.

Although not as mainstream as classic sulfates or cocamidopropyl betaine it is steadily gaining attention in sulfate-free shampoos, co-washes and premium body washes thanks to its mildness and conditioning bonus.

Overall safety is good with low irritation and virtually no comedogenic risk. Still, every formula behaves differently on individual skin so patch testing any new product is a smart precaution.

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