About / Fiona G

Fiona G writes the skin, hair and formulation coverage. She reads ingredient lists, safety reviews and the studies a brand cites, and reports what those studies establish — which is frequently narrower than the packaging suggests.

Where a claim rests on cells in a dish rather than skin on a person, or on twelve participants rather than a hundred, her pages say so in the same breath as the claim.

She does not tell readers what to put on their skin.

Written by Fiona G

• Best Peptides for Skin, Ranked by Evidence

  2026-09-06

• What Not to Mix With Copper Peptides: The Evidence

  2026-09-06

• The Glow Stack: GHK-Cu, BPC-157 and TB-500, Counted

  2026-09-06

• Peptides for Skin and Hair: The Evidence Gap

  2026-09-06

• Peptides for Skin: The Whole Category, Counted

  2026-09-06

• Collagen Peptides for Hair and Skin: What the Trials Show, and Why a Drink Is Not a Serum

  2026-09-05

• Copper Peptides for Skin: What GHK-Cu Is, and What the Studies Show

  2026-09-05

• Argireline (Acetyl Hexapeptide-8): What the Trials Show, and the 10% Question

  2026-09-05

• Matrixyl, Matrixyl 3000 and Synthe'6: One Name, Three Peptides, One Trial

  2026-09-05

• SNAP-8 (Acetyl Octapeptide-3): The Supplier's Study, the 0.05% Solution, and What 10% Really Means

  2026-09-05

• Peptides for Hair Growth: What the Trials Actually Show (2026)

  2026-09-05

• Stress, Cortisol and Skin: What the Brain-Skin Axis Actually Does (2026)

  2026-09-05

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