Gift guide, check off your list with essential skincare

Gift guide, check off your list with essential skincare

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Polyglutamic Acid

Chemical characteristics: Polymer consisting of D- and L-glutamic acid units; Water-soluble peptide; Molecular weight > 10 kDa and generally ranging from ~100 to > 1000 kDa.
Characteristics: Emulsion, colloidal solution, ionic solution, balm, suspension.
Benefits: All skin types but especially dry, dehydrated and dull skin; all hair types especially dry and dull hair.
Provenance, origin:
Commonly known as: Polyglutamic acid (PGA), Poly-gamma-glutamic acid, Gum natto.
Dosage required in cosmetic products: From 0.3% to 3%.
Part of the plant extracted: Seeds.
Properties: Moisturizing, film-forming, humectant, lightening, plumping.
Source: Vegetable.
Family: Poaceae.
Botanical name: Glycine max (L.) Merr. (soybean).
Function: Skin care agent.
Extraction process: Biosynthesis from L-glutamic acid using the Gram-positive bacterium Bacillus subtilis.
I.N.C.I. list name: Polyglutamic Acid.



  • Face care (moisturizing face creams, masks, serums, lip care, mists, lotions, sunscreens, eye contour creams);

  • Body care (creams, milks);

  • Hair care (shampoos, hair serums, masks);

  • Make-up (foundations).


Store away from light, moisture and heat.

Contra-Indications and Precautions

In topical application, the polyglutamic acid is a safe active and particularly well tolerated by all the types of skin. It is nevertheless not recommended to use a care with a concentration of PGA higher than 3%, because an overdose can weaken the cutaneous fabrics and support the appearance of redness. Since it is an acid, a test in the hollow of the elbow is recommended before any use.