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Practical troubleshooting if your skin reacts
Persistent redness, burning, or swelling: stop using lactic acid and any other strong actives immediately and seek professional advice—do not try to “push through” thinking it will settle on its own.
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Common questions about serums for mature skin in humid climates
Mild tingling with some actives can be normal at first, but if you develop persistent burning, intense redness, swelling, rash or worsening breakouts, stop using the serum and consult a dermatologist. Seek professional advice before combining multiple strong actives if you have very sensitive skin, are pregnant, or are already on prescription treatments. Rejuvenating Face Serum – Mystiqare - Mystiqare Niacinamide: A B vitamin that improves aging facial skin appearance - Dermatologic Surgery / PubMed Hyaluronic acid: A key molecule in skin aging - Dermato-Endocrinology / PubMed Central