Hair type
Hair loss and shedding
Increased shedding or thinning density, where scalp condition and follicle support matter more than how the hair feels.
| Ingredient | Score with vs without it | Effect | t | With | Without |
|---|---|---|---|---|---|
| Sodium Lauroyl Glutamate | +507 | +20.7 | 9 | 276 | |
| Hydroxyethyl-2-Nitro-p-Toluidine | -441 | -18.8 | 3 | 282 | |
| Zinc Chloride | +420 | +18.5 | 4 | 281 | |
| Vegetable Oil | +465 | +17.1 | 9 | 276 | |
| Phosphoric Acid | +462 | +17.0 | 5 | 280 | |
| Caffeine | +448 | +16.5 | 34 | 251 | |
| HC Blue No. 2 | +450 | +16.1 | 6 | 279 | |
| Zinc PCA | +481 | +14.4 | 18 | 267 | |
| Calcium Gluconate | +426 | +14.3 | 3 | 282 | |
| CI 10316 | -406 | -13.4 | 3 | 282 | |
| Niacinamide | +376 | +12.7 | 56 | 229 | |
| Menthol | +402 | +11.7 | 28 | 257 | |
| CI 45100 | -377 | -10.3 | 4 | 281 | |
| Sophora Flavescens Root Extract | +149 | +8.7 | 3 | 282 | |
| Polygonum Multiflorum Root Extract | +149 | +8.7 | 3 | 282 | |
| Morus Alba Bark Extract | +149 | +8.7 | 3 | 282 | |
| Swertia Japonica Extract | +149 | +8.7 | 3 | 282 | |
| Plantago Asiatica Extract | +149 | +8.7 | 3 | 282 | |
| Opuntia Ficus-Indica Fruit Extract | +149 | +8.7 | 3 | 282 | |
| Phellodendron Amurense Bark Extract | +149 | +8.7 | 3 | 282 | |
| Portulaca Oleracea Extract | +147 | +8.6 | 4 | 281 | |
| Panthenol | +252 | +8.4 | 113 | 172 | |
| Hydrogenated Vegetable Oil | -150 | -8.2 | 4 | 281 | |
| Zingiber Officinale Root Extract | +332 | +7.8 | 3 | 282 | |
| Sodium Cocoamphoacetate | +396 | +7.3 | 13 | 272 | |
| Piroctone Olamine | +269 | +7.3 | 30 | 255 | |
| Retinyl Palmitate | -431 | -6.6 | 3 | 282 | |
| Magnesium Chloride | -400 | -6.5 | 12 | 273 | |
| Laureth-23 | -316 | -6.3 | 14 | 271 | |
| Magnesium Nitrate | -463 | -6.2 | 8 | 277 |
Effect is the difference in mean score (Elo points) between ranked shampoos that contain the ingredient and those that do not; |t| above about 2 is unlikely to be chance alone.