The Ordinary Aloe 2% + NAG 2% Solution for post-acne marks and uneven tone
The Ordinary

Aloe 2% + NAG 2% Solution

Blemish / Post-Acne Mark SerumAll skin typesAcne-proneNormalCombinationOilySensitive-adjacent

A lightweight soothing serum that targets post-acne marks, uneven tone, texture, pore appearance, and barrier support.

Quick Verdict

A smart pick for blemish-prone skin that wants post-acne mark support and calmness without jumping straight to harsher exfoliating acids.

ItGirlies Breakdown
Why People Buy This

Most post-acne mark serums either rely on aggressive brighteners (vitamin C, kojic acid) that can irritate reactive skin, or niacinamide alone at high percentages. This formula takes a different angle — NAG addresses the melanin-transfer mechanism at the root with less irritation risk, making it accessible for people who want brightening support without the side effects.

Best Routine Slot

After cleansing, before moisturizer, both morning and evening. It is gentle enough to use twice daily and has no restrictions on layering with most actives.

Who Will Love This

People with post-acne hyperpigmentation who want a gentle, consistent mark-fading treatment that stays in the routine even on reactive skin days. Also great for anyone who finds higher-percentage niacinamide too stimulating.

Most Likely to Backfire When…

If you expect rapid pigmentation correction. NAG works slowly — expect a 6–12 week timeline before visible mark improvement. People who abandon it at week 4 consistently miss the payoff period.

If Your Skin Is Already Overwhelmed

This is one of the more comfortable options to keep going during a barrier-stressed period. No acids, no photosensitivity, no harsh actives — just NAG and aloe, which both work well on sensitized skin.

Pairs Well With
  • SPF 30+ every morning — essential for mark-fading to work, since unprotected UV exposure will redarken marks faster than NAG can fade them
  • A squalane or ceramide moisturizer over the top to support the barrier alongside the brightening step
  • Niacinamide serum on alternating evenings for overlapping melanin-inhibiting support

Best For

  • Post-acne marks
  • Uneven tone
  • Pore appearance
  • Blemish-prone skin
  • Soothing support
  • Barrier-conscious brightening

How to Use

Apply a few drops to the entire face morning and evening after cleansing, before moisturizer. Results build over 6–12 weeks of consistent use.

Key Ingredients

Aloe Vera 2% (Aloe Barbadensis Leaf Juice)

Aloe vera calms redness, soothes irritated skin, provides lightweight hydration, and supports the skin environment needed to stay comfortable during active ingredient use. Its anti-inflammatory polysaccharides and acemannan content make it a reliable soothing and barrier-support ingredient.

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N-Acetyl Glucosamine (NAG) 2%

N-Acetyl Glucosamine interferes with the enzyme tyrosinase and inhibits the transfer of melanin (pigment) from melanocytes to skin cells, reducing the formation and intensity of post-acne marks and hyperpigmentation. It also functions as a mild humectant and has been studied for its support of skin barrier function.

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Glycerin

Draws moisture to the skin, helps maintain hydration, and reinforces the skin barrier.

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Propanediol

Attracts moisture to the skin (humectant), improves the slip and spreadability of formulas, and helps dissolve other ingredients.

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Ingredients to Note

Phenoxyethanol (standard preservative)

May be a concern for some skin types. Tap to learn more.

About This Product

The Ordinary Aloe 2% + NAG 2% Solution combines two complementary ingredients at meaningful concentrations: aloe vera (2%) for soothing and anti-inflammatory support, and N-Acetyl Glucosamine (NAG, 2%) for its well-documented ability to interfere with melanin transfer — the process that creates post-acne marks and hyperpigmentation. NAG works as a mild enzyme inhibitor, reducing the production and transfer of melanin to skin cells over time, while aloe vera calms redness and supports the skin environment needed for consistent use. Together, they deliver a gentle brightening and mark-fading effect without the irritation risk of stronger acids or pure niacinamide at high percentages.

Frequently Asked Questions

Is Aloe 2% + NAG 2% Solution good for post-acne marks?
Yes — N-Acetyl Glucosamine works by inhibiting melanin transfer, which is the process that darkens blemish marks. It is slower than stronger brightening acids but significantly less irritating, making it well-suited for consistent, barrier-friendly use.
What does N-Acetyl Glucosamine do for skin?
NAG is a melanin-transfer inhibitor — it interferes with the process that darkens post-acne marks and hyperpigmentation. It also has hydrating properties as a humectant and can support the skin barrier.
Can I use this serum morning and night?
Yes — there is no photosensitivity concern with this formula, and twice-daily application accelerates results. Apply after cleansing and before moisturizer both AM and PM.
Is this better for acne or acne marks?
Primarily for acne marks (post-inflammatory hyperpigmentation) rather than active acne. The NAG targets melanin transfer while the aloe soothes, but it does not have the congestion-clearing or bacteria-targeting action you would need for active blemishes.