Frequently Asked Questions

Get answers to common questions about PCA Hyaluronic Acid Boosting Serum 1oz.

Apply two to three drops to damp, cleansed skin morning and evening. Gently press into face and neck before moisturizing. Use regularly for best results and always follow with broad-spectrum sunscreen during daytime to protect skin.

Many clients feel immediate hydration, with visible plumping within days. Noticeable softening of fine lines often appears after two to four weeks; optimal, longer-term improvements occur with consistent use over several months.

Yes—this serum layers well under most skincare. Apply to damp skin, then follow with antioxidant serums or moisturizers. Avoid applying heavy oils first; when combining strong actives like retinol or acids, introduce gradually and patch test to prevent irritation.

This dermatologist-developed formula is gentle and suitable for many sensitive skin types, as it focuses on hydration. Still, perform a patch test before full use; discontinue if redness or stinging occurs and consult your esthetician or dermatologist if concerns persist.

Use morning and evening for continuous hydration. Apply after cleansing to damp skin, then lock in moisture with a moisturizer. In daytime, follow with broad-spectrum SPF. Adjust frequency if irritation develops or as directed by your skincare professional.

Yes—its lightweight texture absorbs quickly and provides a smooth base. Allow a minute to sink in, then apply moisturizer and primer as needed. This helps makeup apply evenly and prevents dry patches throughout the day.