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CALCIUM SALICYLATE.

Valuable CAS 824-35-1 / PRESERVATIVE

A sophisticated mineral salt of salicylic acid that provides controlled beta-hydroxy acid (BHA) activity while maintaining a more stable pH profile. This multifunctional ingredient combines effective pore-clearing exfoliation with significant anti-aging and photoprotective benefits for a refined skin texture.

keratolytic preservative skin-conditioning agent uvb absorber anti-inflammatory

Science

Upon application, the compound dissociates into calcium and salicylate ions. The salicylate component acts as a keratolytic agent by breaking down the desmosomal bonds between surface skin cells, facilitating deep pore decongestion. Furthermore, it modulates inflammatory responses through COX enzyme inhibition and provides secondary photoprotection by absorbing UVB radiation in the 305–310 nm range.


Research

High confidence
Effective range 0.5–2%
Optimal

1%

Key findings

  1. 01 Clinical evaluations of 1% salicylate salts demonstrated increases in Type I collagen and fibrillin synthesis comparable to retinol, resulting in a measurable reduction in wrinkle depth over 8 weeks.
  2. 02 Research indicates that 2% concentrations applied prior to UV exposure significantly mitigate sunburn risk and provide supplemental photoprotection.

Transparency

Commonly dusted
Min. effective
0.5%
Red flag below
0.2%

Frequently utilized at levels below 0.5% solely for its preservative properties. To achieve meaningful keratolytic or anti-aging results, concentrations between 1.0% and 2.0% are required.


The Formula

Solubility
Water
Optimal pH 4.5 – 7
0 7 14

Stability

Stability is highly dependent on pH; maintaining a range above 4.5 is critical to prevent the salt from precipitating back into salicylic acid crystals.

Synergies

  • Sunscreening agents
  • Hydrating humectants
  • Niacinamide

Conflicts

  • Strong acids (pH < 4.5)
  • Iron salts
  • Strong oxidizing agents
  • Alkaline Earth metals

Safety

CIR Status
Safe as used
Max tested
2%
Sensitization risk Low

Regulatory limits specify 0.5% when used as a preservative and up to 2.0% in leave-on therapeutic skincare. Contraindicated for children under 3 years of age.


Your Skin

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

Our Assessment

Valuable

An excellent, low-irritation alternative to pure salicylic acid that bridges the gap between acne treatment and pro-aging support.


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