The best replacement for moisturizing is hydrating.

The best alternatives to moisturizing are rated as following:
★★★★★  hydrating
★★★  moisturising
★  moisturizing
  hydration
  volumizing shampoo

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Speaking about moisturizing, one probably shouldn't forget about cleansing.

Other search terms related to moisturizing and their ratings are:
★★★★★ cleansing
You have in mind a companion for moisturizing and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of moisturizing in all years. Click on graph for more.
moisturizing
hydrating
moisturising