“AHA, BHA, retinol, and benzoyl peroxide can be mixed with moisturizing ingredients like hyaluronic acid, ceramides, and rosehip oil to get effective results — just ensure you are not using retinol as well as AHA or BHA's during the day," says Graf.
The truth: You can use vitamin C with retinol and retinoids. Get them as separate products so you can tailor the concentration of each and use them at the right time of day. Although vitamin C can be used day or night, it is ideal for daytime use, while retinol and retinoids should be applied at night.
Pairing the two ingredients is safe and can make retinol easier to use. Niacinamide helps hydrate the skin, which reduces the risk of irritation caused by retinol. Niacinamide and retinol can be combined in one product or used as separate products.
Bolster the anti-aging effects of your retinoid with antioxidants, sunscreen and peptides during the day while avoiding harsh cleansers, toners, AHAs and BHAs (glycolic, lactic, salicylic acids) and zit creams with benzoyl peroxide, which can actually deactivate retinoids.
Unless your dermatologist prescribes more, stick to formulas with 1% retinol or less. According to Dr. Emer, "You may want 0.25% when first starting out, then increase slowly to 0.5 and then to 1.0 overtime. Switch up strengths every two to four weeks when exfoliation and irritation are tolerable."
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.
Should you use retinol under your eyes? Yes, definitely. While it is true that retinol – a form of vitamin A – is a powerful ingredient and the skin under your eyes is delicate, there's no reason why you should miss out on the amazing benefits of retinol.
How Do Retinoids Work. New skin cells form deep within the skin layer and with time they finally come to the surface. This process usually takes about one month. Retinoids work by increasing the rate of skin cell turnover.
Retinol (leave to absorb for 10-20 minutes)
“It is important to leave a 10-20 minute wait time before applying the next product. Retinols are powerful antioxidants and it is important to allow it to fully absorb if you want to avoid your skin becoming sensitive,” says Dr Liakas.
High-strength retinol – 0.3%-1%
Look for those with a retinol percentage of between 0.3% and 1%. The strongest retinol product that we offer is our Clinical 1% Retinol Treatment and 1% Retinol Booster.
Later studies evaluated Tretinoin 0.05%. While both were equally effective over a one year period, Tretinoin 0.1% was able to achieve cosmetic improvement in 6 months while 0.05% required closer to 12 months. Finally, 0.025% was compared to 0.1% and it was found that both produced similar improvements in photoaging.
“Studies suggest you need to use at least 0.25% retinol or 0.025% tretinoin to be effective, so I recommend using a product that specifies the percentage.” When choosing a retinol product, Dr. Rogers says it's best to start with the lowest concentration before moving up.
While prescription-strength retinoids may have an effect in a matter of weeks, it can take up to 6 months for OTC retinols to produce the same results. You may notice a difference in conditions like acne after 12 weeks, but sun damage and signs of aging can take much, much longer to improve.
Peeling, redness, and irritation are common onset reactions for some people when they first start to use retinol. Some reactions get so bad that the common term used to describe the list of effects has been dubbed the “retinol uglies”. Note from a skincare expert: Many things in life get worse before they get better.
One swap for the holy-grail retinol
Signs it's not working: You're experiencing redness, dryness, peeling, or a burning sensation after using retinol. Why it might not be working: The truth is, retinol can be too active for some people. “It's too strong [for some people],” says Jaliman.
0.3% – a relatively low but effective dose of retinol. "0.3% retinol is enough to give a good effect but also enough not to put the skin at risk or irritate the skin," continued Abi. "There are creams out there formulated at 1% and 2% but in my experience consumers don't always use retinol properly.
Both Differin Gel and CeraVe retinol serum are retinoid products. Their retinol percentage is at 0.1%, which dermatologists recommend for all skin types.
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.
Retinoic Acid. As mentioned earlier, retinoic acid is the most potent form of retinoids. “This is the end point molecule that is biologically active on skin, and is therefore the strongest,” says Dr. Rabach.
This is a low but effective dose which is enough to provide skin with all the benefits of retinol without the irritation. The 1.5% on the packaging refers to the formula it sits in, which includes ingredients such as matrixyl 3000, a protein thought to increase collagen production and promote plump skin.
The best product you can use in conjunction with retinol, according to Dr. Zeichner, is a moisturizer, which can help hydrate skin and reduce the risk of irritation from retinol. “Some people even prefer to mix their retinol with a moisturizing cream to dilute it out,” he says.
Rouleau says the best time to use a scrub is in the morning. Overnight you've loosened up dead skin cells with your glycolic acid or retinol products, making the morning a perfect time to brush them off. After washing or scrubbing your face, move quickly.
And now another rule to keep in mind: Many prescription-strength retinoids suggest users wait upwards of 20 minutes post-cleansing before putting retinol on their skin and 20 more minutes before putting anything else on, according to Reddit.