# azelaic acid (blogs) — RSS Amplifier Recent posts from the 2 feeds in the RSS Amplifier directory that cover azelaic acid. Page: Feed: --- ## [Why I Believe in "Eating Your Skincare"](https://newsletter.skincarestacy.com/p/why-i-believe-in-eating-your-skincare) _2026-08-18 · Fawn B. · Skincare Stacy's Stack_ How taking collagen became a long-standing part of my skincare routine. ## [Why More People Edit Photos Before Changing Their Look](https://newsletter.skincarestacy.com/p/why-more-people-edit-photos-before) _2026-08-11 · Fawn B. · Skincare Stacy's Stack_ How seeing different hairstyles, hair colors, makeup looks, and more on your own photo can help you make beauty decisions with more confidence. ## [The Secret to Softer, Healthier Skin Starts in the Shower](https://newsletter.skincarestacy.com/p/the-secret-to-softer-healthier-skin) _2026-08-08 · Fawn B. · Skincare Stacy's Stack_ Why glycerin deserves a place in your body care routine and the body wash that changed the way I think about hydration. ## [The Shower That Helped Me Feel Like Myself Again](https://newsletter.skincarestacy.com/p/the-shower-that-helped-me-feel-like) _2026-07-27 · Fawn B. · Skincare Stacy's Stack_ How slowing down, caring for my skin, and saying yes to one invitation reminded me what everyday luxury really feels like. ## [What I am writing when I get back](https://4complexion.substack.com/p/what-i-am-writing-when-i-get-back) _2026-07-23 · Marina | 4COMPLEXION · 4COMPLEXION's Substack_ Annual leave until September. When I'm back: DNA repair enzymes, haircare through perimenopause and menopause and Mothered Silk protein serum. ## [Tretinoin and Azelaic Acid: A Complete Guide](https://newsletter.skincarestacy.com/p/tretinoin-and-azelaic-acid-a-complete) _2026-07-21 · Fawn B. · Skincare Stacy's Stack_ How to combine them safely, minimize irritation, and get the best results. ## [Epii HPT6: Sorry, It Won't Rebuild Your Skin](https://4complexion.substack.com/p/epii-hpt6-sorry-it-wont-rebuild-your) _2026-07-19 · Marina | 4COMPLEXION · 4COMPLEXION's Substack_ Can Epii's HPT6 Drop and Cream really firm skin in the "deeper layer," as the box says? A cosmetic chemist's formula analysis and what the evidence says. Free and independent. ## [The Complete Guide to Fighting Acne](https://newsletter.skincarestacy.com/p/the-complete-guide-to-fighting-acne) _2026-07-14 · Fawn B. · Skincare Stacy's Stack_ Everything you need to know about salicylic acid, benzoyl peroxide, retinol, and azelaic acid, plus how to choose the right one for your skin. ## [Shiny, not dewy: how to keep oily skin calm in a heatwave](https://4complexion.substack.com/p/shiny-not-dewy-how-to-keep-oily-skin) _2026-07-11 · Marina | 4COMPLEXION · 4COMPLEXION's Substack_ A cosmetic chemist on why heat makes oily skin worse, the science-backed routine that calms it, the summer breakouts that aren't even acne and why 10%-20% niacinamide might work better for oily skin. ## [No, ANUA Azelaic acid serum isn't a scam](https://4complexion.substack.com/p/no-anua-azelaic-acid-serum-isnt-a) _2026-07-08 · Marina | 4COMPLEXION · 4COMPLEXION's Substack_ A cosmetic chemist on neutralised azelaic acid: why it's not a scam, and what it can't do. ## [Real SIMs for AI Agents (Sponsored)](https://crawlproof.com/a/8Q4ShfNOWBEC) _2026-07-08 · **Sponsored**_ Pass 2FA and verifications with real carrier numbers via our API. ## [Struggling with Acne? Start Here](https://newsletter.skincarestacy.com/p/struggling-with-acne-start-here) _2026-07-07 · Fawn B. · Skincare Stacy's Stack_ How salicylic acid unclogs pores, reduces breakouts, and improves skin texture ## [Pregnancy Skincare: The "Avoid" List Is Way Shorter Than You Think](https://4complexion.substack.com/p/pregnancy-skincare-the-avoid-list) _2026-07-05 · Marina | 4COMPLEXION · 4COMPLEXION's Substack_ By a cosmetic chemist and biochemist: what to change, what to keep, and why the advice never lines up ## [Medik8's Exo-PDRN Prismatic+: What's Real, What's Marketing, And Whether You Need It](https://4complexion.substack.com/p/medik8s-exo-pdrn-prismatic-whats) _2026-07-01 · Marina | 4COMPLEXION · 4COMPLEXION's Substack_ A chemist's full INCI breakdown of the most-asked-about serum of the year. I bought it with my own money. No brand contact, no PR sample, no affiliate links. ## [11 Body Care Products Worth Having This Summer](https://newsletter.skincarestacy.com/p/11-body-care-products-worth-having) _2026-06-30 · Fawn B. · Skincare Stacy's Stack_ My favorite picks for body acne, rough texture, keratosis pilaris, dry skin, and more. ## [Your 30s are not the decline they're selling you.](https://4complexion.substack.com/p/your-30s-are-not-the-decline-theyre) _2026-06-27 · Marina | 4COMPLEXION · 4COMPLEXION's Substack_ A cosmetic chemist on the skincare routine that matches the biology, not the algorithm. Protocol first, then the science, with every claim linked so you can check my working. ## [How to Keep Your Makeup Flawless This Summer](https://newsletter.skincarestacy.com/p/how-to-keep-your-makeup-flawless) _2026-06-23 · Fawn B. · Skincare Stacy's Stack_ The Simple Step That Helped My Makeup Look Better All Day ## [How to Stay Frizz-Free This Summer](https://newsletter.skincarestacy.com/p/how-to-stay-frizz-free-this-summer) _2026-06-16 · Fawn B. · Skincare Stacy's Stack_ A no-nonsense guide to managing curly and wavy hair all season long ## [Can sunscreen reverse sun damage on its own?](https://4complexion.substack.com/p/can-sunscreen-reverse-sun-damage) _2026-06-13 · Marina | 4COMPLEXION · 4COMPLEXION's Substack_ A biochemist on how sunscreen lets your own biology repair sun damage, what the evidence supports. Plus whether you actually need it indoors, by your phone or computer, or when the UV index is zero. ## [Does Your Skin Really "Absorb Everything"?](https://4complexion.substack.com/p/does-your-skin-really-absorb-everything) _2026-06-06 · Marina | 4COMPLEXION · 4COMPLEXION's Substack_ A cosmetic chemist on how little your skincare actually gets past the surface. Clean beauty, wellness, and whether a sunscreen causes cancer. ## [I'm a cosmetic chemist. Stop blaming 'pore-clogging' ingredients. Here's what really clogs skin, and how to clear it.](https://4complexion.substack.com/p/im-a-cosmetic-chemist-stop-blaming) _2026-05-31 · Marina | 4COMPLEXION · 4COMPLEXION's Substack_ A biochemist's look at what really triggers clogged pores: sebum, dead skin, and formula behaviour, plus the evidence-based routine that keeps them clear. ## [Trade Smarter With IBKR (Sponsored)](https://crawlproof.com/a/cu66yBFyawHB) _2026-05-31 · **Sponsored**_ Join Interactive Brokers through a referral and start investing with low-cost global access. ## [No, Tretinoin Isn't Killing People. Reading the Papers.](https://4complexion.substack.com/p/no-tretinoin-isnt-killing-people) _2026-05-23 · Marina | 4COMPLEXION · 4COMPLEXION's Substack_ A close look at the claim that tretinoin causes deaths, thins your skin, lets pollutants into your bloodstream, and is the same compound used in chemotherapy. And what the actual papers say. ## ["Anti-ageing" creams won't fix menopausal skin. Here's what actually does.](https://4complexion.substack.com/p/anti-ageing-creams-wont-fix-menopausal) _2026-05-19 · Marina | 4COMPLEXION · 4COMPLEXION's Substack_ A cosmetic chemist/biochemist's deep dive into the molecular biology of menopausal skin, the topical oestrogen evidence, and the protocol that actually works. ## [Your "dark spot" serum won't fix those red marks. Here's what will.](https://4complexion.substack.com/p/your-dark-spot-serum-wont-fix-those) _2026-04-14 · Marina | 4COMPLEXION · 4COMPLEXION's Substack_ A cosmetic chemist explains why post-acne red/purple marks are a blood vessel problem, not a pigment problem, and what actually fades them. ## [Your melasma serum isn't working. Here's why.](https://4complexion.substack.com/p/your-melasma-serum-isnt-working-heres) _2026-04-10 · Marina | 4COMPLEXION · 4COMPLEXION's Substack_ A cosmetic chemist breaks down the ingredients that work, the ones that don't, and why melasma needs a protocol — not a miracle serum. ## [When the Formula Becomes a Prop: A Cosmetic Chemist on What the Texture Trend Is Actually Costing Us](https://4complexion.substack.com/p/when-the-formula-becomes-a-prop-a) _2026-03-29 · Marina | 4COMPLEXION · 4COMPLEXION's Substack_ A professional opinion piece ## [Fungal Acne: Everything You Need to Know (Backed by Science, Explained Like a Friend)](https://4complexion.substack.com/p/fungal-acne-everything-you-need-to) _2026-03-16 · Marina | 4COMPLEXION · 4COMPLEXION's Substack_ Written from the perspective of a cosmetic chemist and biochemist with links to every study so you can check the receipts. ## [How to Tell Whether a Peptide Serum Will Actually Work](https://4complexion.substack.com/p/how-to-tell-whether-a-peptide-serum) _2026-02-24 · Marina | 4COMPLEXION · 4COMPLEXION's Substack_ A cosmetic chemist's guide to the science of penetration, concentration, and formulation - everything brands don't tell you, decoded. ## [How to Heal Your Damaged Skin Barrier While Managing Acne: A Science-Based Guide](https://4complexion.substack.com/p/how-to-heal-your-damaged-skin-barrier) _2026-02-15 · Marina | 4COMPLEXION · 4COMPLEXION's Substack_ The barrier-acne cycle: why your skin stays inflammed, and the evidence-based way out. ## [The Whole Truth About Milky Toners.](https://4complexion.substack.com/p/the-whole-truth-about-milky-toners) _2026-02-08 · Marina | 4COMPLEXION · 4COMPLEXION's Substack_ What milky toner actually does, who's most likely to benefit (or skip it), whether it really messes with serum absorption, and how to skim an INCI list to spot a genuinely well-formulated milky toner ## [Sync Bookmarks Everywhere (Sponsored)](https://crawlproof.com/a/CPSrKdwuCRhk) _2026-02-08 · **Sponsored**_ Two-way sync keeps folders and toolbar intact across Chrome, Firefox, and Safari. ## [What's best: Tretinoin 4x/week or Retinal Daily?](https://4complexion.substack.com/p/whats-best-tretinoin-4xweek-or-retinal) _2026-02-02 · Marina | 4COMPLEXION · 4COMPLEXION's Substack_ This is among the most asked questions. Let's explore the current evidence and see if we can hopefully find the answer.