Paragraph match score 80.4%
Page A-019
When lactic acid makes skin dry: why it happens and how to prevent it
Combining too many actives at once: layering lactic acid with strong retinoids, vitamin C, and physical scrubs in the same routine is a common recipe for stinging, redness, and dehydration.
Page A-048
What to avoid (or use carefully) in serums for tropical weather
Layering many active serums together: piling on vitamin C, strong acids, retinoids and peptides in one go often leads to irritation rather than faster results. Heavily fragranced products if you’re sensitive: in humid conditions, fragrance and certain botanicals can feel more irritating on already stressed skin. Skipping sunscreen because your serum feels “protective”: no face serum can replace a broad-spectrum sunscreen for UV protection.