You should use hyaluronic acid after retinol. And to maximise the benefits, you should use retinol first and then wait at least 30 minutes before applying hyaluronic acid.
No matter which form you choose to incorporate your hyaluronic acid, it should be close to the final step in your routine. If you are using it in serum form, you'll apply it immediately after your retinol. If it is part of your moisturizer, it will be your last step.
What Are the Benefits of Combining the Two? Good news: Retinol and hyaluronic acid actually have a synergistic effect. “They can be combined so that the benefits of retinol can be achieved more easily with concomitant use of hyaluronic acid, which helps to prevent retinol irritation,” says Hartman.
After applying retinol to your skin (while it's dry) allow it to sit for 10-20 minutes. Mist your face with water or a facial spray, and then apply your hyaluronic acid. (HA serums are most effective when they're applied to damp skin.) Finally, follow your HA serum with a moisturizer right away.
For prescription retinols, you'll typically apply this step onto dry skin before your moisturizer—but always check with your dermatologist. You may be advised to use it after a moisturizer, which buffers the retinol and lessens risk of irritation.
When it comes to mixing all three together, the best order to apply them is by starting with retinol, followed by hyaluronic acid, and finally niacinamide. By applying retinol first onto a fully cleansed skin the ingredient can penetrate into the lower layers.
A formula with retinol, like the L'Oréal Paris Revitalift Triple Power Eye Treatment, should be applied after your serums and before moisturizer due to its consistency.
Apply hyaluronic serums after cleansing (and toning, if you use a toner). Moisturizers go over the top. During the day, your SPF will be your last skincare step. Most people notice a difference in how their skin feels immediately after applying a hyaluronic acid product.
Moisturizers and serums are two of the most common forms of hyaluronic acid. Moisturizers. Use a moisturizer infused with hyaluronic acid at the time when you'd usually moisturize. Ideally, this would be 2 times a day and always after cleansing, exfoliating, or applying serums.
To use retinol before a moisturizer, wash the face and when completely dry, apply a pea-size amount of retinol. Retinol should not be used on damp skin because the skin will absorb more than required and cause irritation. Finish with a moisturizer to hydrate the skin and reduce the risk of irritation.
Retinoids work best if you use them daily. Specifically, they should be used at night because some types are deactivated by light and air. It's important to start slowly and allow your skin time to adjust. Using too much too quickly can cause redness, dryness, and irritation.
Regardless of your skin type or which product you use first, a layer of moisturizer should always be applied after retinoids.