I swear by this science-backed skincare brand – here's what to shop in Medik8's sale

Medik8 is famed for its no-nonsense approach to skincare. Founded in 2009 by a scientist, its commitment to in-house research and CSA philosophy – vitamin C, sunscreen and vitamin A (retinals) – has endured. Dermatologists, facialists and A-listers alike rave about the brand, which counts Hailey Bieber and Rosie Huntington-Whiteley among its fans. Focusing on skin-renewing and anti-ageing, its skincare roster is designed to streamline your bathroom cabinet – mine included. Like many others, my love affair with Medik8 began with the viral crystal retinal. After a particularly bad bout of persistent acne around my jawline and cheeks – and subsequent scarring – I went to see a dermatologist who recommended a vitamin A derivative like a retinal. They naturally namechecked Medik8. Read MoreThe gold standard for blemish control, retinol and retinal help regulate cell turnover, reduce congestion and improve post-acne marks over time. After seeing near-instant results, I delved deeper into the Medik8 range, from the crystal retinal eye cream to the plumping and firming peptide cream, replenishing hydr8 serum, and the fine-line targeting liquid peptides serum. I can honestly say that my skin has never looked better since overhauling my regimen with Medik8. My only grip? The premium prices. Luckily, Medik8’s summer sale has landed in time to stock up my skincare routine. With 20 per cent off nearly everything for a limited time only (the offers end on Saturday 1 August), these are the five formulas I’d recommend. Medik8 crystal retinal: Was £69, now £55, Medik8.comDaisy Lester/The Standard My skin is noticeably clearer since incorporating Medik8’s crystal retinal into my nighttime routine. Gentler than retinol, the formula is ideal for my sensitive skin. It’s helped clear up my texture and the look of pores, while reducing oil sebum. When blemishes do rear their ugly head, the retinal helps to boost cell turnover and rapidly reduces their appearance. It’s a product I rebuy time and time – particularly when there’s 20 per cent off. Medik8 advanced pro-collagen peptide cream: Was £79, now £63, Medik8.comDaisy Lester/The Standard My skin looks forward to being bathed in the pro-collagen peptide cream each evening. The generously sized tub – which is also available for slightly more affordable refills – is formulated with proteins to improve skin elasticity, hydration and structure, NAD+ for anti-ageing, peptides to smooth lines, and endonuclease to help the skin recover from sun damage. A multi-tasking wonder for all skin types, it works to soften, plump and nourish skin. Medik8 crystal retinal ceramide eye cream: Was £42, now £33, Medik8.comDaisy Lester/The Standard Working in tandem with the crystal retinal serum, the ceramide eye cream should be slowly introduced into your evening routine. Available in progressive strengths (from 0.03 per cent to 0.1 per cent), the eye cream nourishes, plumps and brightens the under-eye area. An anti-ageing favourite, it helps smooth fine lines and crow’s feet while locking in moisture. Fast-absorbing and lightweight on skin, the formula is efficacious with minimal irritation, despite my sensitive skin. Medik8 hydr8 b5 intense serum: Was £60, now £48, Medik8.comDaisy Lester/The Standard For dry skin, particularly during the winter months, the Medik8 hydr8 b5 intense serum is a miracle-worker. Formulated with hyaluronic acid for nourishment, vitamin B5 to soothe, and saskatoon berry for barrier repair, the serum absorbs rapidly to instantly quench parched skin. I use it both in the morning and evening – it sits nicely under makeup and moisturiser without piling, while the pipette applicator helps dispense just the right amount. Medik8 liquid peptides serum: Was £59, now £47, Medik8.comDaisy Lester/The Standard Designed to be applied in the morning with vitamin C and SPF, and at night with retinols, Medik8’s liquid peptides serum works alongside the pro-collagen cream to plump, hydrate and tackle burgeoning fine lines. Stimulating collagen and elastin to improve the skin’s structure and bounce, it instantly locks in moisture. With consistent use, my skin looks brighter and feels softer.