Common Name(s): Strontium nitrate,strontium nitrate,strontium salt anti-sensitivity active preservative,antimicrobial preservation active
CAS Number: N/a
DESCRIPTION
What It Does: Protects cosmetic formulations from bacterial, fungal, and yeast contamination through strontium salt anti-sensitivity active mechanism — maintaining product safety and shelf life throughout the product's use period.
Why It's Used: Preservation is a non-negotiable safety requirement for water-containing cosmetics — microbial contamination causes product degradation, active decomposition, and risk of pathogenic growth that could cause skin infection in users.
How It Works: Strontium ions compete with calcium for neural voltage-gated calcium channels in sensory neurons, reducing trpv1 and trpa1 receptor-mediated nociception without anaesthetic effects — providing anti-sensitivity activity for reactive skin formulations.
Typically Found In: Preserved cosmetics
TECHNICAL DETAILS
Primary Category: Active ingredient – cosmetic active
Secondary Functions: Skin conditioning
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: Per eu annex v limits
SOURCING & ETHICS
Vegan Status: Conditional - supplier confirmation required
Halal Status: Unverified - supplier confirmation required
Source Notes: Commercially produced for cosmetic use. verify vegan/halal status with supplier. [audit 2026-07-29 rev2: the record's own source_notes does not assert a non-animal origin, or instructs the reader to verify with the supplier; "yes" asserts knowledge the record does not hold. determination requires shariah-panel sign-off.]
SKIN COMPATIBILITY
Irritancy Rating: 1/5 – very low
Comedogenicity Rating: 0/5 – non-comedogenic
Sensitivity Concerns: Well-tolerated by most skin types.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Good safety profile at recommended concentrations. ewg score: 1–2.
Works Well With: Standard skincare actives
Avoid Combining With: No known significant incompatibilities
SCIENTIFIC NOTE
Strontium salts at cosmetic concentrations (0.5–3%) are well-tolerated and not restricted as preservatives. strontium chloride is the reference anti-sensitivity active in sensitive skin care.
Last Verified: 2026-03-22
Primary Sources: Eu regulation 1223/2009 annex v,strontium nitrate preservative regulatory review