How to Check Shampoo Ingredients

Quick answer: Read the INCI list on the back of the bottle — ingredients appear in descending order of concentration, so the first five matter most. Check the cleansers (surfactants) for harshness, look for silicones and drying alcohols, then match everything to your hair type. Or skip the chemistry degree: scan the label with HairWise and get a personalized compatibility score in about ten seconds.

Why "good shampoo" depends on your hair

There is no universally good or bad shampoo. A clarifying sulfate formula that ruins dry curls is exactly what someone with a fine, oily scalp needs. That's why generic "toxic-o-meter" scores mislead: the real question is never "is this shampoo good?" — it's "is this shampoo good for my hair type, porosity and scalp?"

The 4 things to check on any shampoo label

1. The surfactants (first 2–3 ingredients after water)

These do the cleaning. Sodium Lauryl Sulfate and Ammonium Lauryl Sulfate are the strongest and most stripping; Sodium Laureth Sulfate is milder; Cocamidopropyl Betaine, Sodium Cocoyl Isethionate and glucosides are gentler still. Dry, curly, color-treated or damaged hair usually does better with the gentle end of that spectrum.

2. Silicones

Names ending in -cone, -conol or -siloxane. They add slip and shine but the non-water-soluble ones can build up, especially on low-porosity hair.

3. Drying alcohols

Alcohol Denat., SD Alcohol and Isopropyl Alcohol evaporate fast and dehydrate hair. (Cetyl and cetearyl alcohol are fatty alcohols — those are moisturizing, not drying.)

4. Your personal triggers

Fragrance (parfum), essential oils and certain preservatives are the most common causes of an itchy scalp after washing. If you react to something, no score matters more than that.

What an ingredient list actually looks like

Aqua, Sodium Lauryl Sulfate, Cocamidopropyl Betaine, Dimethicone, Glycerin, Parfum, Alcohol Denat., Panthenol, Citric Acid, Sodium Benzoate

Reading this fluently takes practice — INCI names are Latin, chemical, and deliberately unglamorous. The shortcut is letting an AI do the reading for you.

Check your shampoo with HairWise in 10 seconds

Take the 2-minute hair profile quiz once — hair type, texture, porosity, scalp condition, concerns.
Point your camera at the shampoo's ingredient list (or import a photo from your gallery).
Get a compatibility score: suitable, risky, or avoid — with every sulfate, silicone and drying alcohol flagged, and gentler alternatives suggested.
Save the scan to your private library so you never re-research the same bottle twice.

Download HairWise free — scan your first product