Retinol side effects, such as redness, dryness and peeling, aren’t inherently a bad sign, in fact — there’s a time period known as the retinization period where it’s common for skin to experience discomfort while your skin adjusts to the Retinol, especially common within the first two weeks of use. However, you also don’t have to experience these Retinol side effects to know that your Retinol formula is working:

Our Formula for Minimal Discomfort

For example, our anti-wrinkle serum with Retinol is clinically-demonstrated to visibly improve skin and 90% of usersⁱ agree skin feels comfortable throughout use. This is thanks to our patent-pending micro-dose formula that delivers visible anti-aging benefits while minimizing discomforting effects.

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Pure Retinol is a type of Retinoid, which is a derivative of Vitamin A. Topical Retinoids come in two different forms: prescription and over the counter. The main difference between prescription and over the counter forms are the type of Retinoid and the level of potency, which plays a role in the level of results you’ll see, but also the possibility of Retinol side effects.

Prescription vs. Over the Counter

The prescription forms of Retinoids prescribed by a dermatologist include Tretinoin, Isotretinoin and Adapalene. These are potent, readily active and used to treat a variety of skin conditions, such as acne, in addition to treating anti-aging concerns and photodamaged skin.

Over the counter options are more popular and easily accessible. These include Pure Retinol and Retinol compounds, which are mild forms of Retinol that require conversion by the skin to become active, such as Retinaldehyde (Retinal) and Retinyl Palmitate. Within the over the counter category, you can find formulas with different percentages of Pure Retinol or combinations of Retinol and Retinol compounds. Consult your dermatologist if you have questions about the best form of Retinol for your skin!

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When searching for the Retinol formula for you, keep in mind that the percentage of Retinol in a formula is not all you need to pay attention to. It's important to note that Retinol formulas with higher percentages don’t necessarily deliver the highest results, as the formula could be made up of combinations of Retinol and Retinol compounds as opposed to Pure Retinol.

Pure Retinol vs. Retinol Compounds

Instead of simply looking at percentages, you should also be mindful of the type of Retinol and other active ingredients within the formula as these will help ensure you’re able to incorporate Retinol into your daily routine with minimal discomfort.

Pure Retinol is the most efficacious form of Retinol to look for as opposed to more mild forms such as Retinol compounds, but, especially for first-time Retinol users, higher percentages of Pure Retinol can also increase the likelihood of Retinol side effects including visible redness, dryness and peeling. At Kiehl’s, we’ve developed a technology that delivers a precise dosage of potent Pure Retinol for visible improvement in skin aging without the discomfort:

Kiehl’s Advanced Micro-Dose Pure Retinol Technology

With our micro-dose Retinol formula, you’ll see improvement in the key signs of skin aging the longer you use the serum with minimal discomfort, even during the first two weeks when discomfort is typically the most common.

Our micro-dose Retinol formula works by topically delivering a small amount of highly potent Pure Retinol to skin to steadily renew skin and gradually address signs of visible skin aging. The patent-pending formulation makes it easy for you to incorporate our Retinol formula into your daily routine with minimal discomfort. The Pure Retinol in our formula is bolstered by efficacious ingredients working synergistically to deliver optimal results. Our formula with Peptide helps complement skin’s elastin reserves while Ceramides within our formula fortify the skin barrier, buffer skin against dryness and minimize discomfort

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Unlike other Retinol formulas, our micro-dose anti-wrinkle serum with Retinol is safe for use during the daytime! Retinol brings fresh, new skin cells to the surface, which can make your skin a little more sensitive to the sun — so, it’s important to use a sunscreen when you add a formula with Retinol to your skincare routine. Our unique micro-dose Retinol formula is safe to use day or night:

Your Daytime Retinol Routine

For your daytime routine, we recommend following our anti-wrinkle serum with Retinol with an ultra-hydrating moisturizer such as our best-selling facial cream and an efficacious facial sunscreen such as our facial sunscreen with SPF 30. We always highly recommend you finish your daily skincare routine with a sunscreen!

Your Nighttime Retinol Routine

If applying our anti-wrinkle serum with Retinol at night, we recommend following with one of our moisturizers or facial oils such as our Lavender nighttime facial oil.

Fiction: Sensitive Skin Types Shouldn’t Use Retinol

Those with sensitive skin types can use Retinol, especially if starting with our micro-dose formula, which is designed to help skin tolerate Retinol with minimal discomfort typically experienced during a retinization period.

Our Retinol serum was formulated to be suitable for all skin types, including sensitive skin and first-time Retinol users.

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It’s not entirely true that you can’t use other ingredients with Retinol. Vitamins C, E, Niacinamide and Hyaluronic Acid pair well with Retinol as do Ceramides and Peptides. Typically, using exfoliating acids with Retinol should be implemented carefully and used as part of your nighttime routine, as exfoliating acids can increase the skin’s sensitivity to the sun. For instance, once your skin is tolerant to your Retinol dosage, a gentle acid at a low concentration, such as Glycolic Acid or Lactic Acid may be incorporated a few times a week to help remove flaky skin to supply a smooth skin surface for Retinol application.

Our Retinol Formula & Other Active Ingredients

Our Retinol Skin-Renewing Daily Micro-Dose Serum is suitable for pairing with our targeted serums with effective ingredients including our dark spot corrector, Vitamin C serum, skin-strengthening serum and skin plumping serum, even when used daily in a daytime and nighttime routine.

As always, don’t forget to incorporate the best sunscreen for your skin type into your daily routine!

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