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Gluconolactone

Commonly known as: Gluconolactone, D-Glucono-1,5-lactone, D-gluconic acid delta-lactone, Glucono-delta-lactone.

I.N.C.I. list name: Gluconolactone.

Extraction process: Oxidative fermentation of glucose syrup derived from corn or beet/sugar cane sugar using a fungal strain (Aspergillus niger), followed by several stages of purification.

Source: Plant-based (corn).

Botanical name: Zea mays (corn).

Family: Poaceae.

Part of the plant extracted: Seeds.

Provenance, origin: Austria, France.

Chemical characteristics: Polyhydroxy Acid (P.H.A.); a Lactone (cyclic ester) derived from gluconic acid; a white, odourless crystalline powder; soluble in water and ethanol; molecular weight = 178.15 g/mol; density: 1.720 g/cm3.

Characteristics: Emulsion, colloidal solution, true aqueous solution.

Dosage required in cosmetic products: As a moisturising agent: 2 - 4% and a pH of 5.5; As a photoprotective agent: 4 - 8% and a pH of 5.5; As an exfoliating agent: 7 - 15% and a pH of 3.8; As a chelating agent: 2%; As a pH regulator or buffering agent: 0.1 - 2%.

Function: Chelating agent, skin conditioning agent.

Properties: Keratolytic, moisturising, photoprotective, solvent, antioxidant, soothing, chelating, anti-inflammatory, preservative.

Benefits: All skin types, particularly those with imperfections (such as comedones, etc...), acne-prone skin, mature skin, dull skin, and pigmented skin; All hair types, especially those with a scalp presenting dandruff.

Details

Usage

Facial Care (face serums, masks, cleansing gels, toning lotions, peelings, scrubs, tinted serums, moisturising creams); Body Care (washing gels, peelings, hand and foot creams, scrubs); Hair Care (conditioners, exfoliating gels, scalp serums).

Exfoliating

Exfoliating Gel Cleanser

with 5% PHA + Aloe Vera — £23.90

Anti-marks

Anti-mark serum

PHA 14% + centella asiatica — from £24.50

Exfoliating

Peeling mask

with organic red fruit acids — £31.50

Exfoliating

Scalp scrub

PHA 5% + jojoba beads scalp scrub — £29.50

Method of Preservation

Store at room temperature in a dry and cool place, protected from light, moisture and heat.

Contraindications, Usage Precautions

There are no contraindications. Treatments based on gluconolactone can be applied to all skin types, even the most sensitive and reactive skins. Indeed, unlike A.H.A. (glycolic acid, lactic acid, etc...) and B.H.A. (salicylic acid, etc...), gluconolactone has a larger molecular size; therefore, it penetrates less deeply into the epidermis and consequently reduces the irritating side effects that we can encounter with A.H.A and B.H.A. However, as a precaution, we advise you to perform a skin tolerance test in the crook of your elbow before using this active ingredient daily for 24 hours. Unlike other hydroxy acids, PHAs (gluconolactone) are not photosensitising.

Find out more

Gluconolactone is an organic acid that falls under the category of polyhydroxy acids (P.H.A.). It is naturally found in small quantities in honey, fruit juices, and wine. Initially used in the food industry as an additive, it is also widely used as a functional ingredient in cosmetic products. Gluconolactone is composed of a lactone core which, under the hydrolytic action of skin moisture, releases gluconic acid, the source of the molecule's activity. It also possesses numerous hydroxyl groups (-OH).