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Moumoujus

RETINOIC ACID.

Avoid CAS 302-79-4 / NOT REPORTED

Retinoic acid, also known as tretinoin, is the biologically active form of Vitamin A, exerting profound influence on cellular differentiation and proliferation. This potent ingredient is recognized for its ability to effectively mitigate signs of photoaging, fine lines, wrinkles, and hyperpigmentation, while also addressing acne by regulating sebaceous activity.

Summary

anti-aging acne treatment skin lightener

Science

Mechanism of Action

As the direct biologically active form of vitamin A, retinoic acid binds to and activates specific retinoic acid receptors (RARs) within skin cells, directly influencing the expression of over 3000 genes in keratinocytes. This cellular reprogramming accelerates epidermal cell turnover, enhances the skin's natural production of hyaluronic acid, collagen, and elastin, and stabilizes keratinization. It also exerts anti-inflammatory effects by reducing leukocytes at inflamed sites and targets sebaceous glands by inhibiting cell proliferation, inducing cell death, shrinking gland size, and decreasing sebum production, thereby minimizing acne.

Research

Clinical Evidence

High confidence
Effective range 0.025–0.1%
Optimal

0.025%

Key findings

  1. 01 Demonstrated statistically significant overall improvement in facial photoaging, resulting in 30% epidermal thickening and a 100% increase in vascularity. However, it led to significantly greater irritant side effects, including erythema and scaling, compared to the 0.025% concentration.
  2. 02 Achieved statistically significant overall improvement in facial photoaging, producing 28% epidermal thickening and an 89% increase in vascularity. This concentration offered comparable efficacy to the 0.1% tretinoin but with a reduced incidence of irritation.

Transparency

Dusting Analysis

Not commonly dusted

Retinoic acid (tretinoin) is a prescription-only drug and is strictly prohibited in cosmetic products by the EU's Scientific Committee on Consumer Safety (SCCS), allowed only as an unavoidable trace impurity below justified limits. Consequently, it is not an ingredient found in cosmetic formulations at active concentrations, rendering the concept of 'dusting' irrelevant for this substance in the context of cosmetic product development.

The Formula

Formulation

Solubility
Oil
Optimal pH 3 – 9
0 7 14

Stability

Retinoic acid is inherently unstable; it degrades significantly when exposed to light, heat, and water, and is hygroscopic in air. For enhanced stability in aqueous formulations and at temperatures up to 65°C, it typically requires a complexed form. Raw material should be stored dry at -20°C. Topical application of retinoic acid heightens skin photosensitivity, making daily and rigorous sunscreen application an absolute necessity.

Conflicts

  • AHAs (Alpha Hydroxy Acids)
  • BHAs (Beta Hydroxy Acids)
  • Other exfoliating acids
  • Benzoyl peroxide
  • Low-pH Vitamin C formulations
  • Physical exfoliants

Safety

Safety Profile

CIR Status
Not reviewed
Pregnancy
Caution
Sensitization risk High

Retinoic acid (tretinoin) is an FDA-approved prescription-only retinoid, indicated for the treatment of acne and photo-damage. It carries a significant teratogenic risk and is therefore strictly contraindicated for use by pregnant individuals or those planning conception. Due to its safety profile and potency, it is banned in cosmetic products in the EU.

Your Skin

Skin Compatibility

Yes Normal
No Dry
Yes Oily
No Sensitive
Irritancy High
Comedogenicity Low

Our Assessment

Verdict

Avoid

While exceptionally efficacious in treating photoaging and acne through profound cellular modulation, retinoic acid is a prescription-only drug, banned from cosmetic formulations in the EU due to its high irritancy and significant teratogenic potential, making it unsuitable for direct inclusion in cosmetic products.

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