Shelf prices are hard to compare because bottles are different sizes. A price per hundred millilitres puts them on one line. It is arithmetic rather than opinion.
Take the Evera range as it is priced today. Frequent Use Shampoo N1, Frequent Use Conditioner N1, Moisturising Shampoo No.2 and Styling Nectar No.11 are £35 for 250 ml, which is £14.00 per hundred millilitres. The three Supherbal shampoos are £38 for 250 ml, or £15.20. The masks come in 180 ml: at £35 that is £19.44 per hundred, at £38 it is £21.11. Liquid Gloss Treatment Nº0 is £28 for 125 ml, or £22.40.
The pattern is plain. The smaller the bottle, the higher the price per hundred millilitres: cleansers and conditioner at the bottom, masks above them, the gloss at the top. That is partly the nature of the products. A mask or a gloss is a treatment, meant for once or twice a week, while a shampoo meets your hair far more often. The bottle is sized for that rhythm.
What the figure cannot tell you is how long a bottle lasts. That depends on how much you use, how often, and how much hair you have. We have not measured it, so we will not offer a number. It also cannot compare a shampoo with a mask, because they do different jobs. The fair comparison is like with like: one shampoo against another, one mask against another.
This is also why the size on the pack matters more than the claim on the front. British cosmetics law requires the nominal content, by weight or by volume, to be printed on the container, with exceptions only for very small packs, free samples and single-application packs. It is a number that cannot be an opinion.
Prices from everahair.com; rule: Art. 19(1)(b), Cosmetics Regulation (EC) 1223/2009 as it applies in Great Britain, legislation.gov.uk/eur/2009/1223/article/19, read 13 October 2026.
