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Vitamin B5 (Pantothenic Acid): Benefits, Skin, Hair, Acne and Dosage (The Complete 2026 Guide)
Vitamin B5 (Pantothenic Acid, Panthenol): Roles, Foods, Deficiency, Effects on Skin and Hair, Acne, Pantethine and Cholesterol, Daily Dose. Complete Guide.
Biotin (Vitamin B8): Hair, Nails, Benefits, Risks and Dosage (The Complete 2026 Guide)
The best-selling vitamin for hair is also the least proven in healthy individuals. What it actually does, who is deficient, why it skews blood tests, and what dose makes sense.
Collagen for Hair and Nails: What Does Science Say?
Does collagen strengthen hair and nails? Nails: real proof (+12% growth). Hair: indirect support. The honest truth.
Hair Loss: 8 Science-Backed Active Ingredients
Hair loss: the 8 active ingredients truly proven by science: biotin, zinc, iron, vitamin D, collagen, saw palmetto, taurine.
9 Foods That Boost Your Body's Keratin Levels
Top 9 aliments pour soutenir la synthèse de kératine : œufs, saumon, foie, amandes, lentilles, huîtres. Teneurs précises en biotine, zinc, soufre, acides aminés (sources ANSES Ciqual + PubMed).
Études indépendantes
Ce que dit la science sur les compléments alimentaires, les régimes et le déficit calorique
Nous avons épluché la littérature scientifique pour apporter de vraies réponses sur ces sujets saturés de promesses. L'objectif est simple : offrir une vision objective, chiffrée et vérifiable, plutôt que des certitudes marketing.
- 01 Shilajit in France in 2026: Price, Transparency and Demand, the First Market StudyFirst French market study on shilajit: 1.8 million searches analyzed, price benchmark across 13 brands, and transparency audit of certificates of analysis. Data collected August 2026.
- 02 Semaglutide (Ozempic, Wegovy) vs Glucomannan (Konjac): A Scientific ComparisonRigorous comparison between semaglutide (Ozempic, Wegovy) and glucomannan (Konjac): efficacy, safety, cost, sustainability. Two tools for two audiences: medication for confirmed obesity, supplement to help maintain an ordinary caloric deficit.
- 03 Top 10 Dietary Supplements for Weight Loss: Summary of 18 Meta-AnalysesObjective ranking of 10 dietary supplements for weight loss based on 18 meta-analyses. Net effect vs placebo, GRADE evidence level, tolerance and overall score. Glucomannan, green tea and caffeine rank at the top.
- 04 How Much Does Each Diet Cost? Comparative Analysis of 14 Popular DietsEconomic analysis of 14 dietary regimens in France: weekly cost, annual cost increase, and cost per kilogram lost. Based on average prices from major retailers and cross-referenced with efficacy measured in scientific literature.
- 05 Meta-analysis of 14 Diets: Synthesis of 12 Major Meta-analysesComparative synthesis of 14 popular diets (Mediterranean, ketogenic, DASH, Dukan, low-carb, intermittent fasting...) based on 12 meta-analyses published between 2010 and 2024. Weight loss, metabolic markers, dropout rates, and long-term benefits, compared objectively.
- 06 Weight Loss Supplements vs Calorie Deficit: How Many Calories Do You Need to Burn to Lose a Kilogram?Rigorous comparison of the effectiveness of simple caloric deficit versus the most popular weight loss supplements, based on scientific literature. Synthesis of 10 meta-analyses and kinetic modeling by the NIH.
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