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How to choose a face serum for acne-prone skin in India
Plan to patch test on a small area of your face for a few days before applying a new serum all over, especially if it includes stronger exfoliating acids or retinoids.
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Patch testing, irritation signs, and when to see a dermatologist
Patch-test on a small area first Apply a small amount of the new serum to a discreet area like behind your ear or along the side of your jawline once a day for two or three days. If you do not see persistent redness, burning, swelling, or a cluster of new bumps in that spot, you are more likely to tolerate it on the rest of your face.