Evidence Library
Browse the claims, explore the research and understand what the evidence means for you.
Filter by topic, evidence or outcome
Browse by category
More filters
Choose an ingredient or topic and an outcome to narrow your results.
Browsing keyword: category:skin-hair. View the complete library
Ratings apply to the specific claim assessed. Read each investigation for its findings and limitations.
Does PRP Really Regrow Hair?
MODERATE — PRP injections can improve hair density in some people with pattern hair loss. Moderate evidence supports a benefit, but preparation varies and PRP has not clearly outperformed minoxidil on key ou...
Read the evidence →
Do Red-Light Hair Caps Really Regrow Thinning Hair?
MODERATE — Selected low-level light and laser devices can improve hair density in androgenetic alopecia. Evidence is moderately convincing for this specific type of hair loss, not for every cap or every caus...
Read the evidence →
Can Your Face Really Reveal Low Iron or Ferritin?
WEAK — Iron deficiency can cause symptoms and anaemia can cause pallor. But appearance cannot reliably diagnose low iron, measure ferritin or identify the reason for a change. Blood tests and clinical contex...
Read the evidence →
Does the GLOW Peptide Blend Really Repair Skin and Heal Injuries?
WEAK — Direct controlled human evidence for the GLOW combination was not identified in this review. Repair-related biology and limited component research do not establish that mixing these peptides improves ...
Read the evidence →
Are Collagen Tripeptides Really Superior to Regular Collagen?
WEAK — Some tripeptide-containing products have improved skin measurements in small trials. That does not establish that tripeptides are generally superior to ordinary hydrolysed collagen. Most supportive st...
Read the evidence →
Does Urea Cream Really Repair Dry, Rough and Ageing Skin?
MODERATE — Urea is a useful moisturising and skin-softening ingredient with supportive clinical evidence for dry and scaly skin. That does not make it a proven age-reversal treatment, and concentration chang...
Read the evidence →
Does Tranexamic Acid Serum Really Fade Melasma and Dark Spots?
MODERATE — Topical tranexamic acid has supportive human trials for melasma, usually over weeks to months. Benefits vary by formulation, and evidence for a topical serum should be separated from oral treatmen...
Read the evidence →
Can Powder Sunscreens Really Protect Your Skin as Well as SPF Cream?
WEAK — A powder may have a tested SPF, but real protection depends on the amount and evenness of application. Evidence does not justify assuming that a light dusting replaces a properly applied sunscreen layer.
Read the evidence →
Does Retinol Body Lotion Really Reduce Crepey Skin and Stretch Marks?
LIMITED — A controlled study supports improvement in fine wrinkles on naturally aged arm skin with one retinol lotion. Evidence for ordinary retinol body lotions removing stretch marks is much weaker; resear...
Read the evidence →
Is Fragrance-Free Skincare Really Better for Sensitive Skin?
MODERATE — Avoiding fragrance is a useful way to remove a potential trigger, especially with fragrance allergy or eczema. It cannot guarantee that a product will suit every sensitive skin type, because other...
Read the evidence →
Do Viral Eyelash Growth Serums Really Work — and Are They Safe?
LIMITED — Bimatoprost has controlled clinical evidence for eyelash growth. That does not validate every cosmetic peptide or conditioning serum, and prostaglandin-type products can have important eye-area adv...
Read the evidence →
Do EGF Growth-Factor Skincare Products Really Repair Skin and Reverse Wrinkles?
LIMITED — Topical growth-factor products have some human evidence for modest cosmetic improvements. Results depend on the formulation, and strong claims of regeneration or reliable wrinkle reversal go beyond...
Read the evidence →