Glycolic Acid

Primary uses

• Chemical exfoliation of the skin surface
• pH adjustment in acidic systems
• Descaling and cleaning in technical applications
• Skin-renewal positioning in professional treatments

Applications

• Exfoliating toners, peels and serums
• Professional and salon treatments
• Industrial descaling and cleaning
• Body and foot exfoliating formats

Advantages

• Well-established exfoliating chemistry with strong consumer and professional recognition
• Supplied as a solution, which is straightforward to dose
• Serves both cosmetic and industrial cleaning markets, broadening supply availability

Limitations to consider

• Corrosive at higher strengths, with real handling and PPE requirements on the SDS
• Cosmetic performance depends on free acid at the finished pH, which partial neutralisation changes
• Finished-product frameworks limit how these products may be sold and labelled; that is the brand owner's responsibility
• Use level is established in your own formulation by bench trial and stability testing. Supplier literature ranges are a starting point for that work, not a specification, and they are not reproduced here as one.
• Colour, odour and sensory behaviour vary between manufacturing sources even where the INCI name is identical, and in personal care those differences are visible to the end consumer. Approve a production-representative sample against your own finished format before the first commercial shipment.

How to choose the right grade

• Define the claim the finished brand intends to make, and confirm who is responsible for substantiating it
• Confirm the pH window and the stability constraints the active imposes on the whole formula
• Establish the addition phase and temperature, since many actives degrade in a hot phase
• Plan finished-product stability testing including colour and odour over the intended shelf life
• Confirm the documentation your quality system requires before the material enters a batch record
• State the solution strength required and whether the destination is cosmetic or industrial
• Design the neutralisation and buffering approach before fixing the raw-material strength
• Bench results do not transfer automatically to production. Order of addition, shear, neutralisation and cooling profile all change behaviour at scale, so plan a pilot batch on the intended equipment before committing to a production volume.
• Exact specification is confirmed against supplier documentation at quotation.

Typical grades

• Solution grades traded against declared concentration
• Grades differentiated by declared purity and colour for cosmetic use
• Buyers search for personal-care, cosmetic and pharmaceutical grade material by name, and those words describe what the buyer needs rather than what is asserted here. Which grade a specific offer corresponds to, and what documentation supports it, is read from the supplier documentation for the exact product quoted.
• Active matter, assay and purity are per-offer values that are declared by the supplier for the exact lot. They change both the use level in the formulation and the true cost per unit of function delivered, so quotations are compared on declared active content rather than on price per kilogram.
• Natural, plant-derived, hypoallergenic, dermatologically tested and similar positioning statements belong to the finished brand and must be supported by the brand owner's own evidence. Any such wording attached to a raw material is treated here as a buyer search term, not as a substantiated property of the material offered.