Details: the art of the manicure perfected, from America's nail salon expert: high performance essie top coats, base coats and treatments, for every detail of your manicure, the perfect compliment to any essie nail polish color. bring the salon experience home with essie All-in-One, our versatile multi-use base + top coat + strengthener formula infused with argan oil. strengthens the nail when applied to the base and provides your essie color with a high gloss shield when applied as a top coat. the result: strength and shine from base to top.