Journal · Page 4 of 9

The Skinic blog — page 4

How skin analysis actually works, what the data says about routines, and the decisions behind our privacy model.

A person wearing a rigid LED face mask in a dark room, their face and shoulders lit only by the mask's own red glow.
ScienceGuides

What an LED Mask Can and Cannot Do

Red light therapy for the face has real published research behind it. Whether the mask on your shelf delivers what that research used is a completely separate question — and it is the one nobody asks.

20 September 2026 · 12 min readRead
A person sitting on the edge of a bed with bare legs extended, small red dots visible across one shin in soft window light.
ScienceGuides

Red Spots on Your Legs That Do Not Itch

One test sorts non-itchy red spots into two groups, and you can do it with a drinking glass. One group is almost always harmless. The other needs a doctor today.

19 September 2026 · 9 min readRead
A clinic retail shelf lined with rows of white skincare bottles and jars under cold overhead fluorescent light.
ScienceGuides

"Medical Grade" Skincare: What the Phrase Legally Means

There is no medical grade category in any regulation anywhere. That does not make the products worthless — but it does mean the phrase on the box is telling you nothing, and four other things are telling you plenty.

18 September 2026 · 10 min readRead
An open palm holding a generous pooled quantity of white sunscreen in flat daylight.
ScienceGuides

Sunscreen by Skin Type: How Much You Actually Need

The SPF number on the bottle describes a quantity almost nobody applies. Getting the amount right matters more than getting the number right — and what changes with your skin type is smaller than you think.

18 September 2026 · 10 min readRead

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