This could be because there is a branded form of ectoine called Ectoin, but not every cosmetic product with ectoine in it uses the branded ingredient
As proteins go, catalases are slightly tougher than most, having relatively stable structures that are better able to resist pH changes, thermal denaturation and proteolysis than other enzymes [Web reference 2]
5-Oxoprolinuria (glutathione synthetase deficiency): a case with neonatal presentation and rapid fatal outcome
De Deken, F
(2008), measures of enzyme activity were used (creatine kinase, lactate dehydrogenase, aspartate aminotransferase, alanine aminotransferase), allowing a gauge of trauma response (proteolysis) and therefore the ability to further understand the mechanisms of action
Some users mention the pump mechanism can be finicky and require multiple pumps to get product flowing, but once its going, it works fine