Wa `alaykum As-Salamu waRahmatullahi wa Barakatuh.
In the Name of Allah, Most Gracious, Most Merciful.
All praise and thanks are due to Allah, and peace and blessings be upon His Messenger.
Answering your question, The Permanent Committee for Scholarly Research and Ifta’, issued the following fatwa:
The types of cream that have a density which prevents water from reaching the skin should be removed prior to wudu (ablution). On the other hand, those types which have no density do not have any effect on the validity of wudu.
Allah Almighty knows best.
Editor’s note: This fatwa is from Ask the Scholar’s archive and was originally published at an earlier date.