This is a common question that I am asked in the treatment room. Some clients like to wait between applications but in actual fact, a slightly moist skin will absorb serums and skincare products much more effectively. The answer is straight away. You do not need to wait any length of time to apply your moisturiser.
Using a moisturizer is an essential step after applying hyaluronic acid. The moisturizer will help seal hydration into the skin and help hyaluronic acid absorb correctly if the air around you is dry.
As long as you have the serum sandwiched between slightly damp skin and a moisturizer, you're good to go. It really plumps up the skin and makes it look nice and moisturized, and stays moisturized, throughout the day. NT: You definitely want your skin to be wet or damp before applying a hyaluronic acid serum.
Two separate serums is the way to go!
When applying both serums, be sure to apply a few drops of Vitamin C serum first (as it is the thinner of the 2) and follow with the HA serum. Allow one or two minutes in between. Follow on with your moisturizer, eye cream and sunscreen.
However, if your chosen acid product doesn't explicitly state how long it should be left for, Dr Mansouri says it's better to be safe than sorry. “I recommend waiting 20-30 minutes to ensure the skin is dry and to minimise inadvertent interactions,” she says.
To allow serums to fully absorb, apply and wait 5 minutes before moisturizing. Take note: Well-formulated serums absorb quickly and disappear into your skin. If they leave an oily or sticky residue, they're not doing their job well.
Serums generally have a smaller molecular size, designed to penetrate quickly and deeply. So you will not affect the penetration of your serum by applying a moisturiser immediately after.
“Hyaluronic acid plays well with most ingredients, while caution must be taken when using retinol in combination with alpha hydroxy and beta hydroxy acids, benzoyl peroxide, and some types of vitamin C.” Linkner echoes the tip about avoiding vitamin C.
Goldenberg's go-to recommendation for timing between serums and moisturizers is about one minute. This wait has the same reasoning: Sixty seconds — give or take — gives each product a moment to delve into your pores.
"It's important to apply HA before your other serums because it helps to seal in the moisturizer you'll be putting on top," confirms board-certified dermatologist Shari Sperling, DO. She adds that it works great as a moisturizer because of how well it binds to water, plumping and hydrating your face.
While some skincare ingredients, like retinol, are best used at night and others, like vitamin C, work their magic in the daytime, hyaluronic acid can be used both morning and night. “I recommend use of an HA serum up to twice daily, depending on your skin's needs,” says Abdulla.
Hyaluronic acid hydrates and plumps up skin, giving you a youthful and radiant glow. By brightening the skin, it can help mask darkness under the eyes. “Hyaluronic acid and glycerin help pull moisture into the epidermis from the environment above and dermis below,” Waldorf says.
Add hyaluronic acid to your existing moisturizer.
If you have a moisturizer that works for your skin already, simply add hyaluronic acid to this to utilize its benefits. Research the ingredients in your product to ensure you'll achieve the correct concentration of hyaluronic acid.
These “can cause an increase in skin cell turnover which can lead to purging—a breakout of spots in areas where you would normally get acne. However, hyaluronic acid does not increase skin cell turnover; it's purely a hydrating skincare ingredient.” In short, hyaluronic acid isn't to blame for any breakouts.
Hyaluronic acid can dry out the skin as it draws moisture from its surroundings and leaves skin exposed if the moisture is not sealed in. The background: The moisture that hyaluronic acid products attract comes from our external environment.
Can You Use Hyaluronic Acid and Vitamin C Together? Not all powerful skincare ingredients can be mixed, but hyaluronic acid and vitamin C are two that become even stronger when paired with one another. These ingredients can provide both immediate and lasting results when used together in anti-aging formulations.
While hyaluronic acid can't fill in visible acne scars, it can help reduce redness and the visible appearance of acne. In addition, hyaluronic acid can help protect the skin, which is especially helpful for acne-prone skin, as it typically doesn't have a very strong lipid barrier.
So, just to make it crystal clear to everyone, when should you apply your hyaluronic acid? "I would tend to recommend getting out of the shower, patting the skin dry gently with a towel and then applying while the skin is still slightly damp and the room is still steamy," advises Dr Kluk.
"Hyaluronic acid can draw moisture from the air and keep your skin moist, holding almost 1000 times its weight in water," she says. "So, it's not only a moisturizer, it has the ability to hold extra moisture."
Limit to Two Serums Per Routine
We recommend you use no more than two face serums per routine. Again, alternating skin care items is a strategy here. If you have many serums that you like, use one or two in your morning routine and two different serums in the evening.
Since serums contain the active ingredients that you want to penetrate as deeply as possible into your skin, you should always apply a serum directly to your skin after cleansing or toning and before your moisturizer and sunscreen. Don't put your serum on after you moisturize.
Any reactions will likely occur within a day, but could take up to two or three, so we recommend waiting a few days before full-face application. You'll want to look out for anything uncomfortable or weird like redness, bumps, or itchiness. If any of which occur, discontinue use.