Sleek MakeUP Acid #2 is a neutral white with a matte finish that is permanent in palette and retails for $9.99. In comparison, Wet 'n' Wild Three's a Party #1 is a cool white with a matte finish that is discontinued and retails for $2.29.
Wet 'n' Wild Three's a Party #1 is 95% similar — it is cooler.