[enthusiash]

Thanks @MarkBroussard, @JonahRay and @ngarayeva001 for your feedback. 

Here’s one other example of what I was referring to: https://www.sephora.com/product/water-drench-hyaluronic-cloud-serum-P222818?icid2=products%20grid:p222818:product.

This % explanation makes sense now. 

[enthusiash]

This is exactly what I was wondering. So if a company advertises, say, 65% hyaluronic acid, it can be assumed that they are using 65% of the hyaluronic acid maximum in water?