Makeup &
Skincare.
Evidence-led reading on makeup & skincare from the HL Benefits desk. Long reads, careful guides, and the boring-but-true positions the research keeps settling on.
The Truth About Melanotan II: Tanning, Side Effects, and the "Barbie Drug" Warning
Melanotan II promises a fast tan from a nasal spray or syringe, but the UK MHRA declared it illegal in 2008, the Cleveland Clinic calls it possibly unsafe, and JAMA Dermatology has documented dysplastic mole changes in users. Here is the full evidence-based picture of the 'Barbie drug' — its mechanism, its side…
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Marine Collagen vs. Bovine Collagen: A Buyer's Comparison for Skin and Joints
Marine and bovine collagen differ in collagen types, absorption, and clinical evidence. This guide compares both for skin and joint goals.
The "Snail Mucin Peptide" Trend: K-Beauty's Anti-Aging Weapon Decoded
Makeup & SkincareThe Peptide Skincare Routine That Reversed Sun Damage in 12 Weeks
Makeup & SkincareWhy Peptide Moisturizers Beat $300 Creams (According to Cosmetic Chemists)
Why Peptide Eye Creams Outperform $200 Serums for Crow's Feet
Peptide eye creams can beat luxury serums when the formula supports hydration, barrier comfort, and realistic wrinkle care.
Matrixyl 3000: The Anti-Aging Peptide That Quietly Made It Into Every Drugstore
Matrixyl 3000 has real peptide science behind it, but the best claims still need context before you buy another serum.
Can You Layer Peptides with Retinol? The Mistake Most People Make
Peptides and retinol can share a routine, but copper peptides and aggressive layering need more care.
We started this section because the conversation about makeup & skincare had become unbearable — too loud, too certain, too often selling something. The boring middle — what the evidence actually supports, repeated across decades, written without a brand to defend — is not a position you can monetize, but it is the position the research keeps quietly settling on.
Companion sections.
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A companion section to makeup & skincare, with its own evidence-led reading list.
Food & Nutrition
A companion section to makeup & skincare, with its own evidence-led reading list.
Weight Loss
A companion section to makeup & skincare, with its own evidence-led reading list.
Definitive guides.
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GHK-Cu Skincare: The 30-Year-Old Discovery Now Outselling Vitamin C Serums
GHK-Cu is trending as a vitamin C alternative, but the evidence is more nuanced than the hype.
Copper Peptides vs. Retinol: Which One Wins the Anti-Wrinkle Battle?
Retinol has stronger wrinkle evidence; copper peptides offer repair support for irritation-prone skin.
A claim about makeup & skincare is not a study. A study is not a meta-analysis. A meta-analysis is not a guideline. The article doesn't fit on a label.
On our desk this week.
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The 8 Best Peptide Serums Dermatologists Actually Use on Their Own Skin in 2026
A derm-vetted shortlist of peptide serums, with evidence notes, layering advice, and realistic expectations.
Argireline: The "Botox in a Bottle" Peptide - Does It Actually Work?
Argireline has real wrinkle-softening evidence, but the skin barrier keeps the Botox comparison in check.