What does wudu-friendly cosmetics mean, and does the label make permissible something that Islamic law does not allow?

Summary

Wudu-friendly cosmetics are products that are easily removed or water-permeable so that wudu water reaches the skin, such as olive oil and henna colour. Products labelled wudu-friendly that actually block water, such as false eyelashes attached with glue, are excluded from the permissible and are ruled haram, all the more so when they involve hair or lash extension. Beautifying oneself is haram if done to display beauty to non-mahram men, with impure or harmful substances, without the husband's permission, or by altering Allah's creation, and permissible if done for the husband with pure, harmless substances that do not alter creation.

Written in our own words from the original fatwa — check the source before acting on it.