Hyaluronic acid supplements can raise skin-hydration readings after several weeks, but you may not see or feel the difference. I explain what happens to HA during digestion, which benefits the human studies support and how to decide whether a supplement is worth testing.
Do Hyaluronic Acid Supplements Work for Skin? Read More »
Ingredient Evidence
Oxidative stress contributes to skin ageing, but you cannot see it in the mirror. Here is how it affects skin, what antioxidant serums may do and why the formula determines whether the ingredient can work.
Oxidative Stress in Skin and Do Antioxidant Serums Help? Read More »
Ingredient Evidence
Topical green tea may modestly help mild, inflamed acne, but the extract and formula determine how much active EGCG reaches the follicle. Drinking green tea remains unproven, while concentrated supplements produced little improvement and raise a liver-safety concern.
Does Green Tea Help Acne? Read More »
Active Ingredients, Ingredient Evidence
Glycolic acid can loosen psoriasis scale and reduce some shaving bumps, but eczema behaves differently. Here is what the clinical evidence supports, where the research is limited, and when an acid is more likely to irritate than help.
Can Glycolic Acid Help Scalp Psoriasis, Eczema or Ingrown Hairs? Read More »
Ingredient Evidence, Skin Concerns, Explained
Green tea may help inflammatory acne, but its catechins are difficult to keep stable in skincare. I examine what human research shows and why the finished formula determines whether the ingredient can work.
Is Green Tea Good for Skin? What the Research Shows Read More »
Active Ingredients, Ingredient Evidence
Your vitamin C serum turns brown when it oxidises. Here’s what the colour change means, when to stop using it, and how to store it properly.
Why Does Vitamin C Serum Turn Brown, and Can You Still Use It? Read More »
Ingredient Evidence
If you’re choosing between retinol and CoQ10 for wrinkles, the evidence is not equal. This guide breaks down what each ingredient does well, where the limits are, and which one has the stronger case.
Retinol vs Coenzyme Q10 for Wrinkles by Cosmetic Chemist Read More »
Ingredient Evidence
Coenzyme Q10 has a credible role in skin. It helps cells produce energy, supports antioxidant defence, and may improve early signs of ageing in some formulas. The catch is delivery. CoQ10 is hard to formulate well, so product quality shapes results more than most labels admit. The evidence is promising, though still modest, which makes this an ingredient worth understanding rather than romanticising.
What Does Coenzyme Q10 Actually Do for Skin? Read More »
Ingredient EvidenceVitamin C serum can help sensitive skin, but it can also irritate it. This article explains what the evidence shows about L-ascorbic acid, vitamin C derivatives, redness, pigmentation, collagen support, and why formula design often decides whether a serum helps or makes reactive skin worse.
Can Sensitive Skin Use Vitamin C Serum Without Burning? Read More »
Claims, Myths & Beauty Culture, Ingredient Evidence
Vitamin C and vitamin E are often grouped together as antioxidant skincare actives, but they do different jobs on skin. Vitamin C has the stronger case for collagen support, uneven tone, and some signs of photoageing, while vitamin E is better placed to protect skin lipids and support the barrier. This article breaks down where each vitamin helps, where the claims get stretched, and why a well-formulated combination can make more sense than treating them as rivals.
How to pick between Vitamin C and Vitamin E for Skin Read More »
Claims, Myths & Beauty Culture, Ingredient Evidence
Vitamin C and hyaluronic acid serums do different jobs, yet brands often sell them with the same promises. This evidence-based comparison looks at what each ingredient actually does well, where the claims get shaky, and how to choose the serum that fits your skin.
Vitamin C vs Hyaluronic Acid Serums? Read More »
Claims, Myths & Beauty Culture, Ingredient Evidence
Vitamin C has a solid place in skincare science. The catch is that unstable formulas, poor packaging, and inflated claims often get in the way.
Vitamin C for Skin: What Works and What Fails Read More »
Ingredient Evidence