Moisturizers

Why oily skin needs a moisturizer too

This is the step people skip when their skin is oily, and skipping it is what keeps the skin oily. Dehydrated skin produces more oil to compensate, not less.

A serum delivers water and actives. The moisturizer seals them in. Without it, a hydrating serum on bare skin can actually speed up water loss, because you have wetted the surface and given it nothing to hold under. Oily skin does not need a heavy cream, it needs something light enough not to sit on top. Dry skin needs richer lipids. Both need something, twice a day.

Apply a coin-sized amount while your serum is still slightly tacky, and carry it down the neck. The neck ages faster than the face and usually gets a fraction of the product.