Cosmetic pH Adjusters & Buffers

11 products

pH adjusters are ingredients used in cosmetic formulation to raise or lower the pH of a product. Maintaining the correct pH is important for product stability, preservative effectiveness and skin compatibility.

Many skincare and haircare formulations require careful pH adjustment during the formulation process, particularly products such as cleansers, shampoos, lotions and toners.

Common pH adjusters are used to:

  • lower pH in alkaline formulations
  • raise pH when formulations are too acidic
  • help optimise preservative performance
  • support product stability and skin comfort

This collection includes ingredients used to adjust and balance the pH of cosmetic formulations, suitable for both DIY makers and professional formulators.