Leaderboard/Thinning hair, wanting volume/ingredient effects
Hair type

Thinning hair, wanting volume

Low density or fine hair where body and scalp condition matter.

Ingredient Score with vs without it Effect t With Without
Calcium Gluconate
+597 +26.5 3 293
Zinc PCA
+648 +18.5 18 278
Phosphoric Acid
+498 +16.4 5 291
HC Blue No. 2
+487 +16.3 6 290
Caffeine
+578 +16.2 34 262
CI 10316
-311 -14.5 3 293
Sodium Lauroyl Glutamate
+696 +13.7 9 287
2-Oleamido-1,3-Octadecanediol
-420 -13.7 3 293
Vegetable Oil
+638 +12.0 9 287
Dimethicone
-415 -11.9 50 246
Hydroxyethyl-2-Nitro-p-Toluidine
-273 -10.9 3 293
Trideceth-10
-345 -9.9 36 260
Aloe Barbadensis Leaf Juice Powder
+217 +9.5 3 293
Hydrolyzed Pea Protein
+378 +9.2 3 293
Retinyl Palmitate
-266 -9.0 3 293
Zinc Chloride
+607 +8.9 4 292
Dimethiconol
-354 -8.5 29 267
TEA-Dodecylbenzenesulfonate
-354 -8.5 29 267
Sodium Lactate
+339 +7.5 26 270
Laureth-23
-383 -7.2 14 282
Panthenol
+277 +7.2 114 182
Amodimethicone
-366 -7.1 18 278
Niacinamide
+341 +7.0 59 237
Guar Hydroxypropyltrimonium Chloride
-255 -7.0 137 159
Coco-Betaine
-353 -6.9 24 272
Sodium Lauryl Sulfate
-307 -6.8 19 277
Triethylene Glycol
-281 -6.7 21 275
Carbomer
-359 -6.6 23 273
Sodium Cocoamphoacetate
+407 +6.4 13 283
Sodium Salicylate
-234 -6.3 49 247

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.