Low humidity can leave skin tight and rough even when you moisturise. Here is what human research shows, why TEWL can mislead, and how to change your routine without fearing humectants or replacing every product.
Can Dry Air Cause Dry Skin? What Low Humidity Actually Does Read More »
Moisturiser & Skin Barrier Science
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
Glycolic acid does not have a simple list of forbidden ingredients. Some combinations are likely to irritate your skin, while others have been banned online without a convincing scientific reason.
What Not to Mix With Glycolic Acid: Retinol, Vitamin C and More Read More »
Claims, Myths & Beauty Culture, Formulation Science
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
Green tea catechins can affect some processes involved in UV-related skin ageing, but no human trial has shown that green tea prevents new wrinkles. Here is what studies of topical formulas, drinks and supplements actually found.
Does Green Tea Prevent Wrinkles? What Human Studies Found Read More »
Active Ingredients, Claims, Myths & Beauty Culture
Human trials have tested ordinary tea, catechin-rich drinks and concentrated extracts, with very different results. Here is what they tell us about UV redness, acne and wrinkles.
Is Drinking Green Tea Good for Your Skin? Here Is What Human Studies Found Read More »
Active Ingredients, Claims, Myths & Beauty Culture
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
Moisturiser does more than soften skin. Here’s what research says about dryness, confidence, and feeling better in your own skin.
Moisturiser, Self-Esteem, and the Science in Between Read More »
Claims, Myths & Beauty Culture, Moisturiser & Skin Barrier Science
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