> ## Documentation Index
> Fetch the complete documentation index at: https://docs.neutralyze.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Mandelic Acid vs. Glycolic Acid: Which AHA Is Right for You?

> Mandelic acid exfoliates with far less irritation than glycolic acid, making it the safer AHA for sensitive skin and darker skin tones prone to hyperpigmentation.

**Mandelic acid is the better AHA choice for sensitive skin and darker skin tones; glycolic acid is stronger but more irritating.** Both exfoliate the skin's surface, but mandelic acid's much larger molecule penetrates slowly and evenly, so it delivers the benefits of an AHA — smoother texture, faded dark marks, more even tone — with a fraction of the sting.

## The key difference: molecule size

* **Glycolic acid** is the smallest AHA. It penetrates fast and deep, which makes it effective for texture and fine lines but also the most likely AHA to cause stinging, redness, and irritation.
* **Mandelic acid** is one of the largest AHAs (derived from the same family as almonds, though Neutralyze uses a synthesized, nut-allergy-safe form). It penetrates slowly, exfoliating gently and uniformly.

## Why this matters for darker skin tones

Irritation itself can trigger post-inflammatory hyperpigmentation (PIH) — the dark marks that medium and deep skin tones are especially prone to after breakouts or harsh products. Because mandelic acid exfoliates with far less irritation, it carries a lower risk of rebound dark marks, which is why it is widely regarded as one of the most pigmentation-friendly exfoliating acids. Glycolic acid, used aggressively, can make PIH worse on reactive or melanin-rich skin.

## Which should you choose?

* **Acne-prone, sensitive, or darker skin:** mandelic acid, ideally paired with salicylic acid (a BHA) to clear inside the pore. See [Salicylic Acid vs. Mandelic Acid](/comparisons/salicylic-vs-mandelic) for how the two work together.
* **Resilient skin focused purely on texture or fine lines, with no active breakouts:** glycolic acid can work — start low and slow.

## How Neutralyze uses mandelic acid

Every core Neutralyze product — the [Exfoliating Pads](https://www.neutralyze.com/products/neutralyze-exfoliating-pads), [Acne Face Wash 2.0](https://www.neutralyze.com/products/neutralyze-face-wash-2-0), and [Renewal Complex](https://www.neutralyze.com/products/neutralyze-moderate-to-severe-acne-renewal-complex) — combines **1% synthesized mandelic acid** (nut-allergy safe) with **2% salicylic acid**, so pores are cleared from inside while the surface is exfoliated gently. The formulas are non-comedogenic, fragrance-free, and made for all skin tones. Browse the full line in the [Anti-Acne Solution collection](https://www.neutralyze.com/collections/neutralyze-anti-acne-solution).

Related reading: [Fading Post-Acne Dark Spots](/guides/dark-spots) · [Neutralyze for Sensitive Skin](/guides/best-for-sensitive-skin) · [quick answer on the FAQ page](https://www.neutralyze.com/pages/faq#faq-mandelic-vs-glycolic)


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