25/08/2026
WHY DOES QUARZ ANTI-OXIDATION SOLUTIONS Plus +FORMULATE AT pH 5.0–5.5?
pH is more than just a number — it is an important part of professional formulation.
The skin surface naturally maintains a slightly acidic environment. QUARZ formulates its serum at approximately pH 5.0–5.5, a skin-friendly range designed to complement the skin’s natural environment.
✓ Supports the skin’s natural acidic environment
✓ Helps maintain a healthy skin barrier
✓ Promotes skin comfort and balance
✓ Helps minimize unnecessary irritation caused by overly acidic or alkaline formulations
However, pH alone does not determine product safety.
A professionally developed skincare formula must also consider ingredient quality, concentration, formulation stability, preservation system, and appropriate safety testing.
That is why at QUARZ, we don’t define a good serum by how thick or sticky it feels.
We focus on what truly matters —
formulation science, skin compatibility, and long-term skin care.
QUARZ Beauty of Science
Scientific Formulation · Skin-Friendly Care · Long-Term Balance