Feel1

Skin Journal

Evidence-led guides to the ingredients we formulate with. Written to be useful whether or not you buy anything from us: what each one does, what it doesn't, and how to use it.

6 guides Beef tallowPDRN & K-beautyPeptidesLashes & browsRoutine & skin over 50
Woman in her early sixties with reading glasses dabbing a tiny amount of serum on her inner forearm for a patch test

Latest · lashes

Eyelash Serum for Sensitive Eyes: What to Choose and How to Start

Dry eyes, contact lenses, allergies or a past reaction: which ingredients to skip in a lash serum, a 7-day patch test with a slow start, and a routine for lens wearers.

19 September 2026 · 9 min read

Start here

  1. 4 Lash Serums Without Prostaglandins: Why It Matters

Lashes & brows

Growth cycles, prostaglandins, and what actually grows back.

5

Close-up progress selfie of one eye and eyebrow by a window, natural short lashes without mascara How to Use Eyelash Serum for Growth: Step by Step The application routine from the people who make one: prep, one stroke along the upper lash line, brows, progress photos... 9 min read A woman in her sixties waiting in a hairdresser's chair, no makeup, sparse pale lashes Lash Serums Without Prostaglandins: Why It Matters Most lash serums that visibly work contain a prostaglandin analogue. What that does, why it is worth avoiding, and what... 6 min read A woman checking her lashes in the rear-view mirror of a parked car in a supermarket car park How to Grow Eyelashes: Castor Oil, Peptides and What Actually Works Lashes cannot be made to grow faster. They can be stopped from breaking, and that is where the visible difference... 5 min read A woman in her seventies sitting in a bay window on an overcast day with a cat beside her Why Your Lashes Get Thinner After 45 It is not your imagination and it is not the mascara. The lash cycle changes with age, and three ordinary... 4 min read A woman brushing her eyebrow at the mirror of an office toilet under fluorescent light How to Grow Eyebrows Back After Over-Plucking Thirty years of plucking leaves a mark. Some of it grows back, some does not — and knowing which saves... 5 min read

New guides, roughly twice a month

We write these when we have something worth saying, not on a schedule. Leave your email and we'll send the next one.

No offers, no reminders. Unsubscribe in one click.