The science behind skin-care products has come a long way but there’s still no such thing as an instant fix — you need time to reap the benefits, says Dr. Rachel Nazarian, a Manhattan dermatologist at Schweiger Dermatology Group. “Results are only seen through consistent use,” she explains. Generally, aim to use a product over at least six weeks, once or twice daily, to notice a difference.
Tip: With any skin-care product, apply in order of consistency — from thinnest to thickest. For example, cleanser, toner (if you use it), serum, and then moisturizer.