Paula's Choice BOOST 10% Azelaic Acid Booster…

What it is

A lightweight, oil-free serum booster built on 10% azelaic acid to fade post-blemish marks and discoloration. It's for anyone dealing with acne scars, dark spots, or uneven skin tone who wants a no-fuss, mix-and-match active.

Why it keeps winding up in carts

6,238 reviewers gave it a 4.3-star rating—strong staying power for a treatment serum that asks you to think about how you layer it.

The Swiss Army knife of blemish aftermath.

A workhorse booster that does one thing well and plays nicely with others.

Azelaic acid isn't as buzzy as niacinamide, but it's quietly brilliant at fading the evidence acne leaves behind.

This serum straddles the line between treatment and texture—it's potent enough to stand alone, flexible enough to layer under your usual routine.

What we looked at

• 01
  Active Strength 10% azelaic acid + salicylic acid (BHA)

  Two gentle exfoliators working in tandem to unclog pores and smooth texture. Azelaic acid is the quieter partner here, prized for fading post-inflammatory hyperpigmentation and redness. The BHA adds a light mechanical edge without harshness.

• 02
  Texture & Use Oil-free, serum/gel hybrid; 1 Fl Oz

  Lightweight and quick-absorbing, designed to work alone or mixed into your moisturizer—smart if you're patch-testing or have sensitive skin. The small size suits the booster format; you're not meant to use much per application.

• 03
  Positioning Fragrance-free, no fluff

  Paula's Choice philosophy: stripped-down formula, no added texture or scent for fragrance sensitivity. Works across skin types because it's not trying to be a moisturizer or occlusive—just active delivery.

Specification & fit

• Who it is forIdeal if you're recovering from breakouts or fighting stubborn discoloration, and you already know how to layer actives—or you're ready to learn.
• Clarify Skin, Soothe IrritationThis highly effective serum booster is a multi-action powerhouse, featuring azelaic acid, known to reduce the look of blemishes and acne, while also helping to fade brown spots and marks from previous acne breakouts.
• Lightweight Face SerumPaula's Choice 10% Azelaic Acid Booster also contains salicylic acid (BHA) a gentle exfoliator. The multi-tasking formula boasts a lightweight, oil-free texture that works beautifully on its own or mixed with other acne treatments, like…
• Mix With Your MoisturizerUse this booster alone or add a couple drops to a moisturizer twice daily as part of your morning & evening skin care. Use along with your favorite Paula's Choice cleanser, toner, exfoliator, spot treatments & moisturizer with SPF for…
• Purposeful FormulaThe oil-free, fragrance-free formula helps to fade dark spots, unclog pores, and visibly reduce redness. Lightweight and quick-absorbing, it can be used alone or mixed with your favorite moisturizer to boost clarity and evenness in all…
• On the labelSold on Amazon by Paula's Choice. Price and availability are set by Amazon and change without notice.