Dipotassium Glycyrrhizate is a potent soothing agent and salt form of glycyrrhizic acid derived from the licorice plant. It is widely recognized for its ability to reduce redness, inhibit inflammatory mediators, and improve the overall resilience of the skin barrier.
- INCI Name:
- Dipotassium Glycyrrhizate
- Chemical/Scientific Name:
- Dipotassium (3β,20β)-20-carboxy-11-oxo-30-norolean-12-en-3-yl 2-O-β-D-glucopyranuronosyl-α-D-glucopyranosiduronic acid
- Common Aliases:
- DPG, Licorice Root Extract Salt, Glycyrrhizic Acid Dipotassium Salt
| Category: | Active Substances |
| Source Origin: | Plant-derived (Glycyrrhiza glabra) |
| Comedogenic Rating: | 0 |
| Primary Industries: | Cosmetics, Pharmaceuticals, Oral Care |
| Solubility: | Water-soluble |
At a Glance: Properties & Effects
| Soothing/Calming | |
| Brightening/Tone | |
| Barrier Repair | |
| Irritation Risk |
Primary Benefits:
- Suppresses pro-inflammatory cytokines to rapidly reduce erythema and edema.
- Inhibits hyaluronidase, an enzyme that breaks down Sodium Hyaluronate in the skin.
- Assists in regulating sebum production and evening out skin tone by interfering with the tyrosinase pathway.
- Provides antioxidant protection against environmental oxidative stress.
Potential Risks:
- Extremely low risk of contact dermatitis; generally considered non-sensitizing.
- Systemic absorption is negligible in topical cosmetic concentrations.
Biological Action & Cosmetic Profile
Glycyrrhizin derivatives function by modulating the biochemical signals associated with inflammation. Specifically, this salt form inhibits the release of histamine and reduces the activity of prostaglandin E2. By dampening the NF-κB signaling pathway, the ingredient effectively manages the symptoms of atopic dermatitis, rosacea, and general skin hypersensitivity. Clinical studies highlight its role as a “cushioning” agent that mitigates the potential irritation caused by more aggressive actives.
Preservation of the extracellular matrix is another critical function of this molecule. It acts as an inhibitor of hyaluronidase, thereby maintaining the structural integrity of Hydrolyzed Hyaluronic Acid within the dermis. This enzymatic inhibition helps the skin retain moisture more efficiently over time. Furthermore, the compound exhibits a mild lightening effect by preventing the activation of tyrosinase, the rate-limiting enzyme in melanin synthesis, making it useful for post-inflammatory hyperpigmentation (PIH).
Broader Applications & Origins
Derived from the dried roots of Glycyrrhiza glabra, this ingredient has transitioned from traditional medicinal use to modern clinical dermatology. Beyond skincare, the pharmaceutical industry utilizes it for its anti-ulcer and anti-viral properties. In personal care, the high water solubility and stability across a wide pH range make it a staple in aqueous serums, sheet masks, and gels. It is also a frequent addition to toothpastes and mouthwashes due to its ability to soothe mucous membranes.
Routine Integration
Synergies:
- Pair with Niacinamide to enhance the skin barrier and target redness more aggressively.
- Combine with Panthenol or Allantoin for intensive post-procedure or sun-damaged skin recovery.
- Use alongside Ascorbic Acid to provide a soothing buffer while boosting brightening efficacy.
- Integrate with Centella Asiatica Extract for maximum anti-inflammatory benefits in acne-prone routines.
Conflicts:
- No known significant biochemical conflicts; it is compatible with most cosmetic ingredients.
Clinical Consensus & Safety
The Cosmetic Ingredient Review (CIR) Expert Panel has evaluated the safety of this ingredient multiple times, concluding it is safe for use in cosmetics at concentrations typically ranging from 0.1% to 1%. It is classified as non-comedogenic and non-phototoxic. While oral licorice consumption can impact blood pressure via the endocrine system, topical application at cosmetic levels does not pose a risk of systemic glycyrrhizism. Dermatological testing consistently shows that it is well-tolerated even by patients with compromised skin barriers or chronic inflammatory conditions.
Is Dipotassium Glycyrrhizate good for acne?
Yes, its anti-inflammatory properties help reduce the redness and swelling associated with inflammatory acne lesions. It also helps regulate sebum and can soothe the irritation often caused by acne treatments like Salicylic Acid or retinoids.
Does this ingredient lighten the skin?
While not as potent as hydroquinone, it provides a gentle brightening effect by inhibiting tyrosinase. This makes it an effective supportive ingredient for fading dark spots and improving overall skin clarity without the risk of irritation.
Can it be used on sensitive skin?
It is one of the most recommended ingredients for sensitive skin. Formulators frequently include it specifically to reduce the “sting” or “burn” factor in products designed for hyper-reactive skin types.