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SEA SALT.

Valuable CAS 7647-14-5 / ABRASIVE, HUMECTANT, SKIN CONDITIONING

Sea salt, primarily composed of sodium chloride but enriched with a spectrum of trace minerals, is utilized in skincare for its multi-functional properties. It is valued for its capacity to purify the skin and contribute to mineral replenishment.

Exfoliant Astringent Antiseptic Purifying Mineral Source

Science

Sea salt primarily functions via osmotic action, attracting water and impurities from the skin, which assists in detoxification and pore refinement. When formulated as a granular ingredient, it provides physical exfoliation, facilitating the removal of dead skin cells and enhancing skin texture. The inherent mineral content, including magnesium and calcium, may also contribute to skin balance and soothing.


Research

Low confidence
Effective range N/A
Optimal

N/A


Transparency

Not commonly dusted

Sea salt is a functional ingredient with well-documented mechanisms across various cosmetic applications. Its inclusion is typically purpose-driven, making it unlikely to be a 'dusting' ingredient.


The Formula

Solubility
Water
Optimal pH 4 – 8
0 7 14

Stability

Highly stable in aqueous formulations. High concentrations of sea salt may impact the stability of certain emulsions or require specific rheology modifiers due to ionic strength effects.

Synergies

  • Humectants (e.g., glycerin, hyaluronic acid) to counteract potential drying effects
  • Botanical extracts for enhanced soothing or purifying benefits

Conflicts

  • Certain anionic gelling agents (e.g., carbomers) due to ionic interference
  • Other strong exfoliants or astringents, potentially increasing irritation risk

Safety

CIR Status
Safe as used
Pregnancy
Safe
Sensitization risk Low

While generally recognized as safe for topical application, excessive concentrations of sea salt, particularly in leave-on formulations, can induce skin dehydration or irritation, especially on compromised or sensitive skin barriers. Adherence to formulation guidelines and appropriate usage levels is paramount.


Your Skin

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

Our Assessment

Valuable

Sea salt is a valuable ingredient offering purifying, exfoliating, and mineral-rich benefits, particularly suited for targeted treatments, provided concentration and individual skin type are carefully considered.


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