Marina @4complexion

▶

▶ 27.4K ❤ 0 💬 0

Dr. Reju-All vs Remedy Copper Peptides Serum. Which one’s better? It’s been a minute since I posted so I thought this would be a good start :) so many of you have asked me this question. #copperpeptides #antiagingskincare #cosmeticchemist #skincaretips #koreanskincare

▶

▶ 554.3K ❤ 0 💬 0

AD: Don’t skip sunscreen! Protect your skin before the damage shows up. From August 11-25 shop Skin1004 Hyalu Cica Water-Fit Sun Serum at @Boots UK online, enter the code ‘SKIN1004SPF’ at the checkout to activate the Buy 1 Get 1 Free offer. #skin1004 #sunscreen #whitecast #centella #bootsuk

▶

▶ 2.8K ❤ 0 💬 0

AD: I say “anti-ageing” because that’s what you type into the search bar. What I mean is keeping the cells I’ve got working for as long as I can. Six months on the @Timeline Resurfacing Exfoliator, and it’s still my go-to: mandelic and lactic for the surface, Mitopure ( Urolithin A on the INCI ) for the half I can’t see. Complexions, there’s a free mini at the link in my bio. Shipping is the only cost. It’s worth trying #timelineskin #skinhealth #skinscience #cosmeticchemist #skincaretips

▶

▶ 12.1K ❤ 0 💬 0

I’ve got tagged in @sunnyfromsunnybread video on the Jumiso 20% niacinamide serum, and I’d been meaning to cover this one anyway. So here’s the chemist’s side on what 20% actually means, how they keep that much niacinamide from crystallising on your skin, and what their testing does. #cosmeticchemist #skincaretips #niacinamideserum #jumiso #koreanskincare

▶

▶ 10.5K ❤ 0 💬 0

Replying to @saris 🫒 does neutralising azelaic acid switch it off? No, and fellow cosmetic chemist @Zobia | Cosmetic Chemist made the same point in her video. What it does change is the form the acid is in, not whether it works, and Remedy measured the pH shifting back toward the acid within an hour on skin. 10% Azelaic acid, 5% PAD. Who it’s for and who should skip it in the video. #azelaicacid #cosmeticchemist #skincaretips #remedyazelaicacid #pigmentation

▶

▶ 6.3K ❤ 0 💬 0

AD: 3-step transitional barrier care for autumn to restore your glassy glow. Fewer ceramides on your face in winter than in summer. Rogers et al. measured it in 1996 ( Arch Dermatol Res, 288:765 ). That’s the reason my routine changes in September, not because summer damaged anything. @haruharu wonder 2% NAD+ serum mist #haruharuwonder #livewithwonderdaybyday #facemist

▶

▶ 45.7K ❤ 0 💬 0

Geek&Gorgeous 15% Azelaic acid serum review, my opinion as a cosmetic chemist on delivery, texture and whether the €35 one does anything it can’t. Complexions, a friendly reminder that not everyone needs azelaic acid. Half of TikTok using it doesn’t mean you should, unless you have something for it to work on: persistent redness, hormonal spots, the marks they leave behind, or uneven tone. If your skin is behaving, save your money. #azelaicacid #cosmeticchemist #geekandgorgeous #skincaretips #hyperpigmentation

▶

▶ 35.8K ❤ 0 💬 0

AD: Not all peptide serums are the same. Not scoring which one is best, just showing you the difference. Beginner: one peptide, one pathway. Argireline works on expression lines, and that's its whole job. Intermediate: several peptides, different pathways working together. Nothing in the bottle brings a cofactor with it. Advanced: signal plus copper delivery plus renewal. GHK-Cu carries copper, and copper is what the collagen-crosslinking enzymes and superoxide dismutase need. What makes this @Dr.Reju-All US PDRN Copper Pepetudes serum advanced is how the copper peptide is protected in a water-based formula, not just the peptide count. The 15% smile-line figure comes from the brand's own two-week test on 22 women aged 40 to 65. Small and in-house, but it points the right way. Link in bio, if you’d like to try. #rejuall #pdrncopperpeptides #copperpeptides #copperpeptideserum #cosmeticchemist

▶

▶ 32.8K ❤ 0 💬 0

Do you need this eye cream? A very honest and organic review of The Ordinary Lacto-PDRN + B9 Eye Cream, for more in-depth view read my Substack. #theordinary #pdrnserum #skincaretips #skincarereview #cosmeticchemist

▶

▶ 1.2K ❤ 0 💬 0

Skincare I use but never post about. I don’t know if this will become a series, but I’ll post it anyway to see what you think. I’d like to keep PR to the minimum as I don’t like clatter and waste. I usually purchase the majority of my skincare/hair/makeup. #skincare #cosmeticchemist #cosmeticscience #koreanskincare

▶

▶ 74K ❤ 0 💬 0

Part 2 of my favourite GHK-Cu peptide serums formulas. #copperpeptides #cosmeticchemist #skincaretips #antiagingskincare #ghkcu

▶

▶ 74.1K ❤ 0 💬 0

I’ve got asked the other day ‘is Epii HPT6 as effective as tretinoin?’ It’s not, not even close. These are well-build formulas that I’d recommend, cream in particular, to add to your anti-ageing, barrier maintenance routine, in addition to two most evidence based products: retinoids and sunscreen. These will contribute to making your skin plumper and healthier. I have no doubt about that. But these are sidekicks’ not the ‘main hero’ On Substack I walk you through the entire formula and show you what is real and what’s not. Link in bio, if you want to read, it’s free access. #epii #antiagingskincare #koreanskincare #cosmeticchemist #hpt6