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Moumoujus

SAPPHIRE POWDER.

Valuable CAS 1317-82-4 / OPACIFYING

Sapphire Powder is a multifaceted ingredient prized for its mechanical exfoliating properties, promoting smoother, more radiant skin. Its finely micronized particles not only refine skin texture and brighten tone but also enhance the delivery of other active ingredients.

Summary

Mechanical Exfoliant Skin Activator Texture Enhancer Brightening Agent Ingredient Delivery Enhancer Opacifying Agent

Science

Mechanism of Action

Functioning primarily as a mechanical exfoliant, Sapphire Powder utilizes its inherent hardness (8-9 Mohs) to gently polish the skin surface, effectively stimulating the natural cell renewal process. Beyond exfoliation, its finely ground particles impart a smooth, cushiony feel and create a soft-focus finish by diffusing light, visibly contributing to balanced and brighter skin tone. Furthermore, certain synthetic forms of sapphire have demonstrated the capacity to improve the penetration of active ingredients, such as peptides, into the deeper layers of the dermis, while also enhancing formulation aesthetics with superior glide and adhesion.

Research

Clinical Evidence

Medium confidence
Effective range 1–40%
Optimal

N/A

Key findings

  1. 01 When incorporated into a patented activation complex (SaphirRegen®) containing sapphire microparticles, 86% of participants observed smoother skin immediately after the first application of the Sapphire Dust Skin Activator®. After 28 days of use, 86% also experienced increased skin radiance. This complex notably reduced skin cell renewal time from an average of 23 days to 17 days.
  2. 02 Cosmetic formulations containing powdered sapphire at concentrations between 1% and 40% as a mechanical exfoliant exhibited an improved exfoliating effect compared to established exfoliating formulations. This efficacy was attributed to sapphire's significant hardness. These formulations were tested at a pH of 5.6 in a one-week single-blind user trial involving 50-100 healthy subjects.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Unknown
Optimal pH 5.6 – 5.6
0 7 14

Stability

Optimal formulation pH for sapphire powder has been noted at 5.6. This aligns with general dermatological recommendations for topical products, which typically fall within the healthy skin pH range of 4 to 6.

Conflicts

  • Should not be used on areas with active acne breakouts.
  • Avoid regular concurrent use with other potent exfoliating agents, such as AHAs (Alpha Hydroxy Acids) or retinoids, to prevent over-exfoliation.
  • Careful consideration of particle size is crucial for safe and effective exfoliation, with recommended ranges between 50-500 micrometers, ideally 100-250 micrometers.

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) and SCCS have not specifically reviewed Sapphire Powder. As Aluminum Oxide, it generally lacks specific hazard statements or codes. When correctly formulated, especially with appropriate particle size, it is frequently considered safe for use on sensitive skin.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

Sapphire Powder is a valuable ingredient for promoting smoother, more radiant skin through mechanical exfoliation and enhanced active ingredient delivery, provided it is formulated with appropriate particle size and usage frequency.

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