Especially if you're still breaking out, pay extra-close attention to the ingredient list as some vitamin combinations and peptides can kick the metabolism of already-active skin into a higher gear than necessary. We love the Sisley Paris Sisleyouth moisturiser ($230; sisley.com.au), which is specifically formulated for preventative care. Rouleau also recommends using a daily sun protectant, underneath make-up. "The best way to prevent ageing for young skin is to use sunscreen every single day of the year, eat a rich diet in antioxidants to prevent ageing from the inside, and always, always, always use product exclusively formulated for your skin type," she says. "Once you get into your 30s and acne is mostly behind you, you can start to consider incorporating more active ingredients into your routine.”
Another key thing to remember: steer clear of overly harsh exfoliants, whether in chemical or scrub form. "Many people will use acids in their serums, scrubs, and cleansers. This can be too aggressive, damaging the skin's barrier function, and result in redness and irritation," Rouleau says. "What you need to understand is that normal cell function still occurs in your 20s, and many anti-ageing products are focused on stimulating cell turnover by exfoliating with ingredients like glycolic, lactic, and salicylic acids." Instead, use a gentle scrub like the Sukin Revitalising Facial Scrub ($10.95; sukinorganics.com.au) once a week.
If you're really concerned your skin is forming fine lines, use a serum like Tata Harper's Rejuvenating formula ($239; iamnaturalstore.com.au) in your nightly line-up, and Rouleau also recommends looking into a chemical peel to tackle both breakouts and premature signs of ageing at once. "The more you rid the skin surface of dry skin cell build up, the less oil and bacteria will be trapped underneath, resulting in less clogged pores," she says. "In addition, it helps to speed up cell turnover, which is an absolute must for keeping the skin healthy, smooth, and young-looking."
A version of this article originally appeared on InStyle U.S.