10 Genius Beauty Products From Ulta That Are Truly Worth the Hype

The Product: Living Proof Perfect Hair Day (PhD) 5-in-1 Styling Treatment ($27)

Why People Love It: This leave-in product will give you visible results as soon as you apply it on your hair. It improves the smoothness, volume, conditioning, strength, and polish of your strands. One customer saw such great results that she now uses it every day. "I used this after reading a magazine review . . . Applied minimally, blow dry (or not), curl . . . holds all day. Even with a mousse my hair tends to get weighed down and look greasy by the end of the day because it's just so fine and then I have to wash it every day. But this product looks great all day even after sleeping on it."