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5 Miracle Ingredients You Should Look for in Your Moisturizer

A dictionary of skin-changing goodness.

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You think you found a great moisturizer–but how can you be sure? Here, five ingredients found in the best of the best.

1. Hyaluronic Acid

How to Say It: "hal-yur-ON-ic" acid

What It Does: Hyaluronic acid (HA), naturally found in skin, is a powerful hydrator that holds up to 1,000 times its weight in water. It plays a critical role in keeping surface skin cells hydrated and "plumped," resulting in supple, youthful-looking skin. We lose hyaluronic acid over time, but the added HA in Neutrogena® Hydro Boost Water Gel works to help keep skin hydrated and smooth, with a healthy-looking glow.

2. Petrolatum Acid

How to Say It: "pet-rol-AY-tum" acid

What It Does: Lubricates the skin and reduces moisture loss by strengthening the skin's protective barrier.

3. Urea

How to Say It: "yur-EE-uh"

What It Does: Increases water retention and absorption of other skincare products. When combined with ingredients like lactic acid (see below), it can also accelerate skin cell renewal through exfoliation.

4. Glycerin

How to Say It: "GLISS-er-in"

What It Does: Maintains the skin's internal water balance by attracting and sealing in moisture. It also helps skin cells reach full maturation before shedding, which is especially helpful for people with psoriasis (a condition which causes skin cells shed too quickly).

5. Lactic Acid

How to Say It: "LACK-tik" acid

What It Does: Acts as a gentle exfoliant to reveal new skin and helps other skin care products to absorb more quickly.

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