Skiniko field notes

Articles on ingredients and routines

Articles that compare ingredients, edit routines and explain labels. They are written for cosmetic decisions, and where the evidence is unsure, they say so.

A clear glass toner bottle and a small amber dropper bottle side by side on a sage green and cream tabletop
explainer · 6 min

Is Salicylic Acid a BHA? AHA vs BHA, Explained

Salicylic acid is the BHA on the label. It works in oil, and that is what sets it apart from AHAs.

Read field note ↗
Two amber dropper bottles beside a glass of water on a sage green and cream tabletop
comparison · 6 min

Glycerin vs Hyaluronic Acid: Which Is Better for Dry Skin?

Glycerin has the evidence and the price. Hyaluronic acid has a narrower job.

Read field note ↗
Hands rinsing at a kitchen sink beside a tube of hand cream and a pair of rubber gloves on the draining board
hands · 7 min

Dishwater Hands: What the Sink Does, and What Actually Helps

The detergent, not the water, is the part that matters for dishwater hands. A habit helps more than another product.

Read field note ↗
Woman glowing with sweat after activity with a towel, water bottle and unbranded cleanser
humid weather · 4 min

Sweat and Skincare: Gym, Commute and the Second Cleanse

Sweat changes how skin feels by lunchtime. It does not automatically add steps.

Read field note ↗
Woman in humid summer light examining small rolled flecks of sunscreen on her fingertips
sunscreen · 4 min

Why Sunscreen Pills in Humid Weather, and How to Stop It

Pilling happens when the product film breaks up. Your skin is not reacting, so you can usually fix it without buying anything.

Read field note ↗
Magnifying glass over skincare research papers beside an unbranded serum bottle
evidence · 3 min

How to Fact-Check a Skincare Ingredient Claim Yourself

Checking a skincare claim needs no special access. Find the citation, then spend ten minutes on PubMed.

Read field note ↗
Daily skincare essentials grouped apart from an occasional treatment serum and two evening markers
application frequency · 5 min

How Often to Use Each Skincare Product: Daily vs Weekly

Some steps run on a fixed schedule and some are a dial you set. Sorting your routine into those two groups answers most frequency questions.

Read field note ↗
A cleanser, moisturiser and sunscreen arranged as a simple three-product routine
minimalist routine · 6 min

Minimalist Skincare Routine: 3 Steps and a Test for a Fourth

A minimalist skincare routine gives every product a named job. Products that cannot name one leave the shelf.

Read field note ↗
Three simple unbranded skincare essentials on a sunlit bathroom shelf
beginner routine · 5 min

Skincare Routine for Beginners: A Simple 3-Step Start

Starting skincare takes three products and two weeks of attention. After that, every new product needs a reason to be there.

Read field note ↗
Four unbranded skincare products arranged from light serum to sunscreen on ascending steps
routine order · 5 min

The Correct Order to Apply Skincare Products

The correct order to apply skincare products comes down to texture. Thinnest goes on first, thickest last, and sunscreen follows its own label.

Read field note ↗
A small dab of skincare cream placed on the inner forearm for a patch test
patch testing · 5 min

How to Patch Test a New Skincare Product

A small-area check can reduce guesswork. It cannot guarantee future compatibility.

Read field note ↗
Hands using a magnifying glass to inspect the back label of an unbranded skincare bottle
ingredient list · 5 min

How to Read a Skincare Ingredient List

An ingredient list is useful evidence. It is not a complete product review.

Read field note ↗
Balanced pale green and amber serum bottles representing niacinamide and vitamin C
niacinamide · 7 min

Niacinamide vs Vitamin C: Differences, and Which to Choose

Niacinamide and vitamin C are different vitamins, and one cannot replace the other. How they differ, which suits which job, and whether you need both.

Read field note ↗
Light gel moisturiser and fluid sunscreen beside a humid tropical window
humid weather · 5 min

Skincare for Humid Weather and Climates: A Simple Routine

Humidity changes how a routine feels on your skin. Each step keeps the same job.

Read field note ↗
Woman with natural midday skin shine holding a plain blotting paper to her cheek
visible shine · 5 min

Why Is My Face Shiny by Midday? Oil, Sweat or Product Film

The mirror shows surface shine. It does not tell you which layer produced it.

Read field note ↗