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Chloe Sevigny & KIEHL'S

WHAT IT IS: Kiehl's Limited Edition Rare Earth Deep Pore Cleansing Masque by Chloe Sevigny, $23

WHO IT BENEFITS: While supplies last, 100 percent of the net proceeds will benefit the Waterkeeper Alliance, waterkeeper.org. Sevigny and actor Michael C. Hall each designed labels for this initiative.

WHERE TO GET IT: kiehls.com

Alicia Silverstone & ECOTOOLS

WHAT IT IS: EcoTools by Alicia Silverstone 4-Piece Backstage Vanity Brush Set, $12.99

WHO IT BENEFITS: The expectant celeb's second partnership with EcoTools launched for Earth Month. One percent of the sales benefit the Wildlife Alliance, wildlifealliance.org.

WHERE TO GET IT: Walmart stores

Alicia was involved in the design process

Laila Ali

LAILA ALI PROFESSIONAL

WHAT IT IS: Intensive Hydrating Shampoo, $13

WHO IT BENEFITS: Throughout Earth Month, Ali is donating 10 percent of the sales from her skin care and sulfate-free hair care lines to Environmental Working Group, ewg.org.

WHERE TO GET IT: lailaali.com