'However, a skin with no retinol experience should always start low (with 0.3%) and increase the level (to 0.5% and then 1%) with each bottle. If the skin is quite sensitive just stay with 0.3%.
So, how often should you actually use retinol? The short answer: Eventually, most people can use it every day or almost every day, if they like. The long answer: It depends on what kind or product you're using, how sensitive your skin is, and what percentage of retinol you're using.
For beginners, most dermatologists recommend a retinol with a concentration of 0.25 percent to one percent to see results.
Generally, it takes a few weeks to see results, but some OTC options may require months of regular use. Most dermatologists said you'll need to use retinol for a few weeks before you see results, but you should see improvements by 12 weeks with most products.
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.
“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.
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.
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.
As a result of its effects on your skin's cellular turnover speed, tretinoin reduces the appearance of wrinkles, evens out your skin's pigmentation and also treats skin issues such as acne. The end result is smoother, younger looking skin that's much less affected by fine lines, wrinkles or other common signs of aging.
It may seem surprising, but even small percentages of retinol can benefit your skin. Percentages of 0.01% retinol or greater are proven to be effective at improving multiple signs of ageing, reducing pore size and improving the overall health of your skin.
Moderate-strength retinol – 0.03% to 0.3%
If you experience skin concerns like uneven skin tone or texture and a visible loss of firmness, try adding a stronger retinol product to your routine such as 0.03% to 0.2% retinol products. Start by using 2-3 nights a week and build usage to see how your skin responds.
Apply a small amount to face in the PM as part of your skincare regimen, after water serums but before heavier treatments. Do not use with other Retinoid treatments. Avoid unprotected solar exposure. Store in a cool, dry place.
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.
Start Slow
To acclimate your skin to the retinol, start using it twice a week (every three days) in the evenings. If you aren't experiencing any redness or flakiness the next day, you can bump it up to every other day—and then even every day if your skin can handle it.
First, choose the gentlest formula (again, retinyl palmitate or retinol), and start slowly—apply it just one night a week for one week, two nights a week for two weeks, three nights a week for three weeks, and then every other night (for sensitive skin) or every night (for “tough” skin) indefinitely.
Remember, that 'retinoid uglies' are likely to be temporary, and it will take time before you see the end result. You have three skin layers—the epidermis, dermis, and subcutaneous tissue. Your epidermis is your visible layer, and renews approximately every 28 days.
Regardless of your skin type or which product you use first, a layer of moisturizer should always be applied after retinoids.
Tretinoin (also known as Retin-A, Renova): “This is a prescription topical retinoid. In its mildest forms, it's used for its anti-aging properties.
005% (low strength) tretinoin cream, which provides an optimal combination of effectiveness and tolerable side effects for most patients. If this cream isn't effective, your doctor might recommend switching to a stronger tretinoin cream.
Tretinoin is a medication used to treat acne and sun-damaged skin. It can't erase deep wrinkles, but it can help improve the appearance of surface wrinkles, fine lines, and darks spots. Tretinoin is also known as retinoic acid.
CONCLUSIONS: Tretinoin 0.05% lotion was significantly more effective than vehicle in achieving treatment success and reducing inflammatory and comedonal lesions in adult and adolescent females with moderate or severe acne. There appear to be age-related efficacy and tolerability benefits favoring adult females.
Many over-the-counter formulas claim you'll see results within weeks, but in my experience, it takes an average of 12 weeks for retinoic acid to produce noticeable changes in the skin.
Retin- A (Tretinoin)
Retin-A is referenced as being 100 times stronger than retinol. It also has a more immediate effect because it is formulated as retinoic acid; unlike retinols, no conversion by the body is required. As such, many users of Retin-A experience notable improvements in as little as 4-8 weeks.