Trehalose

INCI: Trehalose 

Category: Natural Sugar / Humectant / Cell-Protective Active 

Used in: Serums, moisturisers, sensitive skin formulas, eye creams, anti-pollution treatments 

Typical Usage Level (Topical): 0.5–5%

What This Ingredient Does

Trehalose is a non-reducing disaccharide naturally produced by organisms including plants, fungi, and invertebrates that survive extreme dehydration. Its survival mechanism involves forming a glass like stabilising matrix around cellular proteins and membranes during water loss, preserving their structural integrity until rehydration occurs. Applied topically, trehalose replicates this protective function: it forms a thin film on the skin surface that slows transepidermal water loss (TEWL), stabilises cell membrane structure under dehydration stress, and protects proteins from oxidative and thermal damage. Unlike standard humectants that simply attract water, trehalose actively shields cellular structures from the consequences of water loss a functionally different and complementary mechanism.

Works well alongside Hyaluronic Acid and Sodium Hyaluronate for layered hydration, and with Beta-Glucan in sensitive or environmentally stressed skin formulas.

Key Benefits

• Forms a stabilising matrix around cellular proteins and membranes during dehydration stress

• Reduces TEWL by creating a protective film on the skin surface

• Protects against oxidative and thermal stress beyond standard humectant function

• Particularly effective in harsh climates heat, cold, low humidity, or high pollution

• Non-irritating and suitable for the most sensitive and compromised skin

Who It's Best For

• Dehydrated, environmentally stressed, or climate exposed skin

• Sensitive, reactive, or barrier compromised skin requiring gentle but functional hydration support

• Post procedure skin needing protective hydration during recovery

• Urban skin in Indian cities where heat, humidity fluctuation, and pollution compound dehydration stress

Clinical Note by Dr. Su

Trehalose is not widely known among consumers, but its mechanism is genuinely distinct from standard humectants; it protects cells from the damage of dehydration rather than simply drawing in water. For patients with severely compromised barriers or post-laser skin, I find it a valuable supporting ingredient precisely because it does not depend on an intact barrier to function.

References

• Higashiyama T. (2002). Novel functions and applications of trehalose. Pure and Applied Chemistry. (cell-protective mechanism reference)

• Sola-Penna M & Meyer-Fernandes JR. (1998). Stabilization against thermal inactivation promoted by sugars on enzyme structure and function. European Journal of Biochemistry. PMID: 9538362