Because oil is the heaviest—or most dense—product in your routine, it's able to penetrate your moisturizer, allowing it to reach your skin, but the reverse isn't true. If you want to really amp up the moisture, apply your oil after applying moisturizer onto damp skin.

Do you put face oil on before or after moisturizer?

Just make sure to always, always apply your oils last. Yes, you read that correctly. “Oils can easily penetrate moisturizers, serums, and treatments, but no products can penetrate an oil, which means they need to be applied last,” says Dr. Gohara.

Can you mix oil and moisturizer?

How do you use face oils? You can always mix oils in with your moisturizer, but if you're going to give them their own spot of honor in your skin-care routine, derms say there are two ways you can do it, depending on the type of face oil you use.