The age-old mantra of ‘less is more’ appears to be returning to the skincare lexicon in the form of the CSA approach. So what is CSA, you ask? And how can you achieve the minimalist routine? Read on, as an expert breaks down the science behind the acronym.

What does CSA stand for?

CSA essentially refers to three active ingredients used in tandem to create a low-key, yet effective routine. Championing vitamin C and sunscreen by day (hence the C and the S), and vitamin A (you get the idea) by night, to unlock your best skin yet.

Why does CSA constitute the ultimate skincare routine?

Vitamin C should be a staple within every morning routine due to its multitude of benefits,” explains Daniel Isaacs, Head of R&D at Medik8 – AKA the brand that coined the beauty trinity. “With its powerful antioxidant properties, it can neutralise the damaging and ageing effects of free radicals.” It’s also a great choice for those with visible dullness and hyperpigmentation concerns as it helps to tackle the formation of melanin pigments within the skin. Plus, it visibly brightens and illuminates complexions.

Sunscreen we know is a non- negotiable step in our skincare routine. Blocking out UV rays and minimising damage to the skin.

“Finally, we have vitamin A. Vitamin A delivers multiple benefits, which include minimising the appearance of fine lines and wrinkles, resurfacing the skin’s texture, and improving the look of uneven skin tone. Vitamin A is most commonly known as retinol.”

The Best Products To Build A CSA Routine

Step 1. Vitamin C

Step 2. Sunscreen

Step 3. Vitamin A

The products on this page have been selected by our editorial team, however, The Handbook may make a small commission on some products purchased through affiliate links.


Want to receive more great articles like this every day? Join our daily email now