The Role of Ammonium Glycyrrhizate in Lip Care Products and Lipsticks

1. General Introduction to Ammonium Glycyrrhizate

In cosmetic R&D, Ammonium Glycyrrhizate (the ammonium salt of glycyrrhizic acid derived from licorice root) is often considered for formulations targeting delicate lip skin. As a potential ingredient in lip balms, this compound has a molecular structure that may support multiple functions, including soothing irritated skin and contributing a characteristic licorice taste. However, its penetration through the lip mucosa, effectiveness in treating chapped lips, and suitability as a natural sweetener require formulation-specific evidence. In lip care formulations, Ammonium Glycyrrhizate may be evaluated alongside Shea Butter and Beeswax for emollient and occlusive properties, Panthenol (Vitamin B5) and Vitamin E for skin conditioning, and Ceramides to support the skin barrier.

2. Mechanisms of Action of Licorice-Derived Ammonium Glycyrrhizate in Soothing Chapped Lips

Unlike conventional surface emollients, Ammonium Glycyrrhizate may contribute to lip care through the following mechanisms, depending on the formulation and available evidence:

• Soothing and anti-inflammatory activity: Lip skin has a relatively thin stratum corneum and lacks sebaceous glands, making it susceptible to dryness and irritation. Glycyrrhizic acid derivatives have demonstrated anti-inflammatory potential. However, the precise contribution of Ammonium Glycyrrhizate to local inflammation control, including its effects on the 11β-hydroxysteroid dehydrogenase type 2 (11β-HSD2) enzyme, requires specific supporting evidence. Its efficacy and safety for treating redness, itching, swelling, or severely cracked lips should not be assumed without appropriate testing.
• Potential contribution to taste: Lip products may be inadvertently ingested in small quantities during normal use. Ammonium Glycyrrhizate is derived from glycyrrhizic acid, a compound associated with the characteristic taste of licorice. However, its suitability as a sweetening agent, its sensory profile at the intended concentration, and its safety under foreseeable incidental ingestion must be assessed for the finished formulation. It should not be assumed to prevent tooth decay or bacterial fermentation without supporting evidence.

3. Applications of Ammonium Glycyrrhizate in Lip Care Formulations

• Lip care products are a potential area of application for this ingredient because of the interest in licorice-derived compounds for skin conditioning and soothing. However, suitability depends on the ingredient's grade, solubility, compatibility with the formulation base, concentration, stability, and safety assessment. The following applications represent potential formulation concepts rather than confirmed commercial uses.

Intensive Lip Care Balms

• Care for severely chapped lips: A lip balm containing suitable emollients and occlusive agents may help reduce moisture loss and improve the appearance and comfort of dry, flaky lips caused by cold weather, low humidity, or repeated lip licking. Ammonium Glycyrrhizate may be evaluated as a supporting ingredient, but rapid healing of deep or bleeding cracks has not been established solely by its presence.
• Support after dermatological treatment: Lip care formulations may help alleviate dryness associated with dermatological treatments, including oral isotretinoin. Ammonium Glycyrrhizate could be investigated as a soothing component, subject to compatibility and safety evaluation. Persistent inflammation, bleeding, or severe cheilitis requires appropriate medical assessment.

Tinted Lip Products / Ammonium Glycyrrhizate in Matte Lipsticks

• Potential irritation reduction and formulation support: Matte lipsticks can contribute to dryness or tightness depending on their pigment load, wax system, film-forming agents, and overall formulation. Ammonium Glycyrrhizate may be evaluated for its potential soothing properties, but it cannot be assumed to prevent irritation, allergic contact cheilitis, or lip discoloration without clinical or product-specific evidence.
• Taste and odor considerations: In formulation development, taste and odor are important sensory attributes of lip products. The licorice-associated taste of glycyrrhizic acid derivatives may influence the sensory profile of a lipstick. However, the ability of Ammonium Glycyrrhizate to mask the odors or bitter tastes of synthetic waxes and base oils must be verified through sensory testing.

Lip Sleeping Masks

• Support for the skin barrier: Lip sleeping masks commonly use emollients and occlusive ingredients to reduce moisture loss and improve lip softness overnight. Ammonium Glycyrrhizate may be considered as a complementary ingredient for soothing purposes, but claims regarding deep tissue repair, accelerated healing, or suppression of UV-induced damage require specific evidence.
• Compatibility with gentle exfoliating ingredients: Some lip masks combine exfoliating ingredients, including fruit-derived enzymes or low concentrations of alpha-hydroxy acids (AHAs), beta-hydroxy acids (BHAs), or polyhydroxy acids (PHAs). The suitability of combining these ingredients with Ammonium Glycyrrhizate depends on formulation compatibility, pH, irritation potential, and finished-product testing. Its presence does not guarantee that exfoliation will be free of stinging or irritation.

Lip Plumping Glosses / Lip Oils

• Potential soothing support: Lip-plumping products may contain ingredients such as menthol, ginger extracts, or capsicum-derived compounds to create a warming, cooling, or tingling sensation. These ingredients can also cause irritation in some users. Ammonium Glycyrrhizate may be investigated as a complementary soothing ingredient, but it cannot be assumed to prevent inflammation, burning, allergic reactions, or irritation caused by plumping agents. Its effect on the product's taste and sensory profile should also be assessed.

Lip Exfoliators

• Potential support for post-exfoliation comfort: Both physical and chemical exfoliation can irritate the delicate surface of the lips, particularly when performed aggressively or too frequently. Ammonium Glycyrrhizate may be evaluated for its potential soothing properties in exfoliating formulations. However, it should not be assumed to immediately repair micro-injuries, prevent inflammation, or guarantee improved tolerance of subsequent lip care products.

Cosmeceutical Products for Cheilitis-Prone Skin

• Potential use in specialized skin care: Ammonium Glycyrrhizate may be investigated for use in topical formulations designed for sensitive or irritation-prone skin around the lips. However, its suitability for treating eczematous cheilitis, atopic dermatitis, or allergic contact cheilitis has not been established by the ingredient's presence alone. Although certain licorice-derived compounds have anti-inflammatory mechanisms, Ammonium Glycyrrhizate should not be described as equivalent to corticosteroids or as a proven treatment that can be used indefinitely without adverse effects. Medical claims require appropriate clinical evidence and compliance with applicable regulatory requirements.

4. Representative Commercial Products Using Ammonium Glycyrrhizate in Lip Care

Illustrative Image	Product Category	Example Brands / Benchmark Product Lines	Main Function and Role of Ammonium Glycyrrhizate in the Formulation
	Soothing and Restorative Lip Balms	Carmex, Uriage Bariéderm Cica-Lips, Bioderma Atoderm Lèvres	These products target dry, chapped lips and support skin comfort through their respective formulations. The presence and specific role of Ammonium Glycyrrhizate in these products have not been verified.
	Lip Sleeping Masks	Laneige Lip Sleeping Mask, Care Lip Night Mask	These products are designed to condition dry lips and improve softness overnight. Ammonium Glycyrrhizate has not been confirmed as an ingredient in the listed products.
	Moisturizing Tinted Lip Products	Dior Addict Lip Glow, selected organic lipstick lines	These products focus on lip color, conditioning, and sensory performance. The use of Ammonium Glycyrrhizate to reduce dryness or improve taste in the listed products has not been verified.