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SODIUM LACTATE METHYLSILANOL.

Valuable / SKIN CONDITIONING

SODIUM LACTATE METHYLSILANOL is a complex derived from Sodium Lactate, a key component of the skin's Natural Moisturising Factor (NMF). It excels at attracting and retaining moisture, significantly boosting skin hydration while also offering gentle exfoliation and enhancing skin barrier function.

Summary

Humectant Hydrator Natural Moisturising Factor (NMF) component pH Regulator Buffering Agent Keratolytic (gentle exfoliating) Barrier Function Support Antioxidant Skin Lightening Efficacy Enhancer

Science

Mechanism of Action

This ingredient functions primarily through its Sodium Lactate component, acting as a potent humectant that draws and locks moisture into the stratum corneum, effectively preventing dryness and supporting skin hydration. As an integral part of the skin's NMF, it reinforces the skin's natural moisture balance and helps to minimize transepidermal water loss (TEWL). Furthermore, it serves as a pH regulator in formulations and exhibits mild keratolytic properties, assisting in the gentle removal of dead skin cells to improve texture. Secondary actions include strengthening the skin barrier, providing antioxidant benefits, and increasing the effectiveness of skin lightening agents.

Research

Clinical Evidence

High confidence
Effective range 0.5–10%
Optimal

5%

Key findings

  1. 01 Sodium Lactate at 5% concentration demonstrated maximum immediate skin hydration within 30 minutes of application, with 1% and 3% also providing significant moisturizing effects.
  2. 02 Reported to enhance skin moisture content by up to 84%.
  3. 03 When used at 5% or higher in an acidic pH, it exhibits exfoliating properties.
  4. 04 Enhances the efficacy of skin lightening agents by increasing skin lightness and reducing melanin, while simultaneously improving skin moisturization as an NMF component.

Transparency

Dusting Analysis

Not commonly dusted
Min. effective
1%
Red flag below
0.5%

While there are no specific 'dusting' concerns reported for Sodium Lactate Methylsilanol, concentrations below 1% may not provide optimal active benefits such as hydration. For maximal immediate hydration, 5% is indicated, and for exfoliation, 5% or more in an acidic pH is necessary.

The Formula

Formulation

Solubility
Water
Optimal pH 6.5 – 8.5
0 7 14

Stability

Sodium Lactate is heat-stable and contributes to formulation stability through its bacteriostatic properties. It acts as an effective buffering agent, helping to prevent undesirable pH shifts, particularly when combined with lactic acid.

Synergies

  • Lactic acid (for pH buffering)
  • Skin lightening agents (to enhance efficacy)

Conflicts

  • Electrolyte-sensitive emulsifiers and thickeners
  • Ceftriaxone (in specific medical contexts, due to calcium interaction)

Safety

Safety Profile

CIR Status
Safe as used
Max tested
10%
Sensitization risk Low

Sodium Lactate is widely regarded as safe for cosmetic applications, having been reviewed and deemed safe by the CIR Expert Panel for Alpha Hydroxy Acids. It is also FDA-approved as a direct food additive and is included on the WHO's List of Essential Medicines. EWG Skin Deep rates SODIUM LACTATE METHYLSILANOL as 'LOW' for cancer, allergies, immunotoxicity, and developmental/reproductive toxicity.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Valuable

SODIUM LACTATE METHYLSILANOL is a highly valuable multi-functional ingredient, offering significant hydration as an NMF component, gentle exfoliation, and barrier support, suitable for all skin types with a low risk of irritation.

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