What is skin cycling, and should you try it?

If your skincare routine has started to feel more confusing than calming, skin cycling could be the answer. The viral TikTok trend has gained a loyal following for its strategic approach to skincare, especially when it comes to using powerful active ingredients. But what exactly is skin cycling, and does it really work? We asked Pretoria-based biomedical scientist Dr Judey Pretorius to break down the trend, explain the benefits and share who should (and should not) try it.

What is skin cycling?

“Skin cycling is a skincare routine where active ingredients are rotated over several nights to prevent irritation and support skin repair,” explains Dr Pretorius. Instead of using exfoliating acids, retinoids and other strong actives every night, skin cycling spaces them out over a few days to give your skin time to recover. The concept became popular on TikTok thanks to dermatologists and skincare influencers sharing easy-to-follow routines that promised glowing skin without the dryness, redness or irritation that often comes with overusing actives.

According to Dr Judey, one of the reasons skin cycling resonated so strongly online is that it simplifies skincare. “It helps reduce irritation from overusing active ingredients and is easy to follow and share on platforms like TikTok,” she says. “Users also liked the visible results and the science-backed approach.”

How does skin cycling work?

A typical skin cycling routine follows a four-night cycle. Each night focuses on a different skincare goal.

Night 1: exfoliation

This is the night to use a chemical exfoliant such as AHAs (alpha hydroxy acids), BHAs (beta hydroxy acids) or PHAs (polyhydroxy acids) to remove dead skin cells, smooth texture and boost radiance. Think glycolic acid, lactic acid or salicylic acid-based products.

Night 2: retinoid

On the second night, a retinoid or retinol is applied to help improve skin texture, support collagen production and target concerns like fine lines, acne and pigmentation.

Night 3 and 4: recovery

These nights are all about hydration and barrier repair. Focus on nourishing moisturisers, ceramides, hyaluronic acid and gentle skincare products that help calm and restore the skin. After the fourth night, the cycle repeats.

What are the benefits?

One of the biggest advantages of skin cycling is that it gives your skin barrier time to recover between active ingredients. Overusing exfoliating acids and retinoids can lead to dryness, sensitivity and inflammation, especially if you have sensitive skin. “Skin cycling may help strengthen the skin barrier, reduce irritation and inflammation, prevent over-exfoliation and improve overall skin health,” says Dr Pretorius. It can also make active ingredients more tolerable for those who want to introduce retinol or acids into their routine without overwhelming their skin.

Who should try skin cycling?

Skin cycling is especially helpful for people with sensitive or dry skin types. If you are new to retinoids or exfoliating acids, this method can help your skin gradually adapt while minimising irritation. However, Dr Pretorius notes that some skin conditions require extra caution. “People with very reactive skin conditions such as rosacea or eczema should approach it cautiously and may need professional guidance,” she explains. 

The biggest mistakes to avoid

While skin cycling is designed to simplify skincare, there are still a few common mistakes that can lead to irritation. According to Dr Pretorius, one of the biggest errors is using too many active ingredients at once. Layering strong acids, vitamin C and retinoids together can overwhelm the skin and damage the skin barrier.

Other mistakes to avoid:

• Over-exfoliating

• Skipping recovery nights

• Not moisturising properly

• Forgetting sunscreen during the day – especially important when using exfoliating acids and retinoids.