INCI: Alanine - Also known as: L-Alanine, 2-Aminopropanoic Acid, Ala

QUICK FACTS

What is Alanine?

Alanine is a non-essential amino acid with the simplest chiral structure possible - its methyl side chain makes it the smallest chiral amino acid in the group. This structural simplicity gives alanine exceptional stability and makes it one of the most water-soluble members of the amino acid family, properties that make it a reliable contributor to both the NMF water-binding environment of the stratum corneum and the overall humectant system of a formula.

In the skin, alanine is present as a free amino acid within the natural moisturizing factor, where it is released as part of the filaggrin breakdown products that accumulate in the stratum corneum during normal keratinocyte differentiation. Its water-soluble, neutral character makes it a core hydration amino acid - less structurally specialized than proline or histidine, but present in healthy skin's NMF at meaningful concentrations and consistently associated with the surface hydration environment.

Alanine is also one of the most abundant non-essential amino acids in collagen, where it occupies many of the X and Y positions in the Gly-X-Y tripeptide sequence alongside proline and hydroxyproline. Its inclusion in the Sweet Chemistry amino acid blend alongside glycine and proline creates a topical amino acid environment that reflects the actual composition of the collagen matrix in which Matrikynes® peptides are researched to operate.

What does it do for skin?

In topical application, alanine functions as a humectant within the NMF system, associated with attracting and retaining water within the uppermost layers of the stratum corneum. Its neutral charge and exceptional water solubility make it one of the more straightforward water-binding amino acids - it does not carry the cationic charge of arginine or the imidazole reactivity of histidine, but contributes a consistent, well-tolerated moisture-binding character that complements the more specialized amino acids in the same blend.

As a collagen-associated amino acid, alanine's presence alongside glycine and proline in the Sweet Chemistry amino acid complex creates a more representative topical amino acid environment for the collagen formation context. While alanine is not structurally essential to the collagen triple helix the way glycine is, it is the most prevalent non-essential amino acid in collagen's primary sequence - making it a logical inclusion in a blend designed to reflect the actual amino acid composition of the skin's structural protein environment.

Within the broader Sweet Chemistry hydration system, alanine works alongside PCA, sodium PCA, sodium lactate, and four forms of hyaluronic acid to build a layered, multi-component approach to NMF restoration. No single amino acid or humectant recreates the full chemistry of healthy skin's moisture management - the diversity of the blend is the point.

FOUND IN

In 3 Formulas as Part of the 1% Amino Acid Blend

Alanine is part of Sweet Chemistry's complete eleven-amino-acid NMF complex, present in all three water-based formulas as one of the most water-soluble and consistently skin-compatible amino acid contributors to the hydration system.

Nourishment - All Skin Types

Barrier Repairing Hydra-Serum 1% Amino Acid Blend (incl. Alanine) - 1.0 oz / 30 ml

The Hydra-Serum pairs the amino acid complex with PCA, sodium PCA, sodium lactate, and four forms of hyaluronic acid for a comprehensive NMF-restoring approach within a 40%-active emulsion.

Hydration - Dry to Normal

Elasticity Reinforcing Hydra-Cream 1% Amino Acid Blend (incl. Alanine) - 1.7 oz / 50 ml

In the Hydra-Cream, alanine contributes to the amino acid NMF system alongside 3% Matrikynes® peptides and 2% THD ascorbate in a cushioned satin finish for dry to normal skin.

Hydration - Dry to Dehydrated

Elasticity Reinforcing Lipid-Cream 1% Amino Acid Blend (incl. Alanine) - 1.7 oz / 50 ml

In the Lipid-Cream, alanine contributes to the hydration layer alongside shea butter and nourishing seed oils for dry and dehydrated skin.

WORKS TOGETHER WITH

Collagen Amino Acid Glycine

INCI: Glycine.

The most abundant amino acid in collagen, present alongside alanine in all three water-based formulas. Synergy Note: Glycine provides the essential structural collagen amino acid; alanine is the most abundant non-essential collagen amino acid - together they represent the two most prevalent amino acids in the collagen primary sequence within the same topical blend.

Collagen Amino Acid Proline

INCI: Proline.

A structurally critical collagen amino acid present alongside alanine in the eleven-amino-acid complex. Synergy Note: Glycine, proline, and alanine are collectively the three most abundant amino acids in collagen's primary sequence - their co-formulation creates a topical amino acid environment that most closely mirrors the actual composition of the dermal collagen matrix.

NMF Component Sodium PCA

INCI: Sodium PCA.

A highly hygroscopic NMF salt present in all three water-based formulas. Synergy Note: Alanine and sodium PCA are both endogenous NMF components with water-binding character - their combination contributes to a more complete, skin-identical approach to surface hydration.

ECM Peptide Complex Matrikynes® Bone Peptides

INCI: Hydrolyzed Cow Bone Extract.

At 3% in all four formulas, associated with improvements in the appearance of skin density and aging signs. Synergy Note: As a collagen-associated amino acid, alanine contributes to the local amino acid environment in which Matrikynes® peptide activity is studied to take place - providing the structural raw material alongside the peptide signaling complex.