Description
Description
Encapsulated Salicylic Acid is a controlled-delivery form of the beta-hydroxy acid in which the active is incorporated into a carrier matrix or particle system. Encapsulation is used to modify handling, reduce immediate free-acid exposure, improve dispersion, and control release compared with direct addition of crystalline salicylic acid.
Chemical & Technical Profile
| INCI / Identity | Salicylic Acid (encapsulated delivery grade) |
|---|---|
| CAS No. | 69-72-7 for salicylic acid; carrier is grade-specific |
| Molecular Formula | C7H6O3 for salicylic acid |
| Molecular Weight | 138.12 g/mol active |
| Physical Form | Free-flowing encapsulated powder |
| Solubility | Dispersible; release and apparent solubility depend on carrier technology |
| Functional Category | Encapsulated beta-hydroxy acid delivery system |
Mechanism of Action / Technical Function
Salicylic Acid is lipophilic relative to alpha-hydroxy acids and acts as a keratolytic/exfoliating agent by reducing corneocyte cohesion and promoting desquamation. Encapsulation does not change the intrinsic acid chemistry; it changes the rate and location at which free salicylic acid becomes available. Performance therefore depends on active loading, carrier composition, particle size, release kinetics, and final formulation pH.
Formulation Guidelines
Disperse the encapsulated powder under moderate shear without mechanically destroying the carrier. Avoid prolonged high-shear homogenization after addition unless the specific delivery system is designed to tolerate it. Incorporate during cool-down when possible. Do not calculate dosage from total powder weight alone; use the active-content basis of the encapsulated grade. In gels and emulsions, verify that the carrier remains uniformly suspended and does not aggregate or float.
Compatibility & Stability
Monitor particle distribution, sedimentation, pH, viscosity, active release, and physical integrity of the carrier. Excessive solvent, surfactant, or alcohol levels can prematurely extract salicylic acid from some encapsulation systems. Compatibility should therefore be evaluated in the finished base.
R&D, Scale-Up & Quality Control
Critical quality attributes for Encapsulated Salicylic Acid Powder include active loading, particle integrity, pH, dispersion uniformity, and release behavior.
Packaging, Shipping & Storage
Supplied in a sealed aluminum pouch. Store tightly closed, dry, cool, and protected from humidity and heat. Avoid crushing or compacting the powder during handling.
Applications
Exfoliating serums, oily-skin gels, cleansers, lotions, masks, scalp exfoliation systems, and controlled-release BHA formulations.
Regulatory Note
U.S. acne-treatment claims can place a finished product within the OTC drug framework; distinguish cosmetic exfoliation claims from drug claims.
Reviews
There are no reviews yet.