However, if you want to get your skin care done as quickly as possible, Ciraldo says that cocktailing your serums together is probably fine. “Unless your product contains a potentially irritating ingredient, like glycolic acid or a retinoid for example, mixing your serums together in the palm of your hand, and then patting them into the skin is a perfectly fine way to apply multiple serums to the skin,” she says, explaining that mixing products of a similar viscosity together won’t make the product less effective. “The rate of penetration is much more dependent on the molecular size of the actives in each formula, rather than the way they’re applied to the skin, so you’re not diluting any of the potency or efficacy if you’re cocktailing them together.”
Serums
Retinoids and Retinol
What’s the difference between a retinoid and retinol?
Retinoid is an umbrella term that refers to all vitamin A derivatives available in skin care, from retinol esters (the mildest form, which you can find in over-the-counter serums) to retinoic acid (such as tretinoin, which is the strongest and requiresd a prescription).
Retinoids are often considered the crème de la crème of topical skin care by dermatologists, estheticians, and skin care enthusiasts alike—and for good reason. Years of research and clinical trials have proven time and time again that retinoids have the ability to effectively boost collagen production, increase cell turnover, and even out the appearance of hyperpigmentation and texture. But retinoids are very powerful ingredients that should be used carefully and slowly integrated into your routine in order to avoid irritation and dryness.
Where does retinoid fit into skin care order?
Typically, instructions will tell you to apply your retinoid before your moisturizer. But if you have sensitive skin or if you are first starting out, Hu recommends applying your retinoid—whether that be an over-the-counter formula or a prescription one—on top of your moisturizer, as that will help minimize any possible irritation. “Layering your retinoid after applying moisturizer will help create a gentle barrier between your skin and the potent ingredient,” Hu says.
Is it important to eventually be able to apply retinoids directly to the skin?
Not necessarily! According to Ciraldo, it’s more about your personal preference and your skin’s tolerance. “If you have been applying your retinoid after your moisturizer for a while, and you are still seeing great results, keep at it,” she advises. “If you believe your results have plateaued, then maybe it’s time to slightly increase the strength by applying it before your moisturizer.”
Eye Cream
Do you need an eye cream?
Because the skin around your eyes is thinner and more delicate, Dr. King says the signs of aging will be more apparent and you’ll most likely also face irritation, puffiness, and dark circles in that area. Eye creams and serums can target those skin concerns while also being gentle enough with sensitive skin.
What ingredients do you look for?
Dr. King says that if puffiness is your main concern, you should look for an eye cream that contains caffeine to help constrict blood vessels and de-puff the skin. For fine lines, she said to look for peptides, growth factors and retinol to smooth skin. Dr. Garshick adds that vitamin C and niacinamide will help brighten dark circles and hyperpigmentation. And a hydrating ingredient like hyaluronic acid to help plump the skin doesn’t hurt either, she says.
How often should you apply?
Dr. Garshick recommends applying eye cream right before your moisturizer. It can be used once or twice a day, depending on the ingredients and formulas. Some eye creams that are lightweight or contain a SPF protection are better suited for day use while other creams that are thicker in formula and contain ingredients such as retinol are better to use during your nighttime routine.