Skin1004 Serum Review
Our verdict
A 30ml azelaic acid serum for all skin types at $21.60 with a 4.4 rating across 754 reviews, making it one of the more credibly reviewed options in this price range. The moisturizing benefit and drop format add everyday practicality.
Check price on AmazonBest for
Anyone targeting the appearance of uneven tone, texture, or congestion who wants an affordable azelaic acid option with a solid review base
Skip if
You are already using a higher-concentration azelaic acid treatment and don't need another layer, or if you want a dedicated anti-aging peptide serum instead
- Form Drop
- Skin type All
- Benefits Moisturizing
- Size 30 Milliliters
- Scent Azelaic Acid
Our scorecard
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Owner rating4.4/5
4.4 average across 754 owner ratings
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Popularity3.2/5
754 owner reviews, more than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other anti-aging skincare: serums, night creams, facial peels, wrinkle patches and anti-aging devices we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
Skin1004 is a Korean skincare brand with a strong reputation for affordable, functional formulas. This serum is built around azelaic acid, an active that has a well-documented role in addressing the appearance of uneven skin tone and texture. At $21.60 for 30ml and with a 4.4 rating across 754 reviews, it's among the more reliably rated serums in this price tier.
Azelaic acid is a naturally occurring acid found in grains and is generally considered well-tolerated across skin types, including sensitive skin. The listing marks this as moisturizing, suggesting the formula doesn't lean too acidic or stripping in feel. The drop format supports precise application and keeps the formula hygienic during use.
With over 750 reviews, the rating is meaningful rather than speculative. The modest monthly purchase volume is the one note of caution, suggesting it may be peaking in its buying cycle, though the established review base still makes it a low-risk pick.
Pros
- Azelaic acid is a well-regarded active for tone and texture
- 4.4 rating across 754 reviews is a credible and substantial base
- Moisturizing listed benefit means it shouldn't feel harsh or drying
- All-skin-type compatibility
- $21.60 for 30ml is fair for an acid-based serum
Cons
- Concentration of azelaic acid not disclosed in the listing
- Monthly purchase volume is low relative to review count
- No additional actives or supporting ingredient detail provided
Specifications
- Form
- Drop
- Skin type
- All
- Benefits
- Moisturizing
- Size
- 30 Milliliters
- Scent
- Azelaic Acid
Performance notes
Azelaic acid works by supporting the turnover of skin cells and targeting the appearance of discoloration and uneven texture. It is typically gentler than alternatives like glycolic acid and is often recommended for those with sensitive or reactive skin. The moisturizing benefit label suggests the serum is formulated to hydrate alongside the acid, which helps offset any potential for dryness. Drop format makes per-use dosing consistent. All-skin-type compatibility aligns with azelaic acid's generally well-tolerated profile.
What buyers say
A 4.4 rating across 754 reviews is a meaningful sample. Buyers are largely satisfied, and the high review count relative to current monthly purchases suggests this product built its following over time and has plateaued somewhat in the current market cycle. For shoppers, a large established review base at this rating is usually a reliable signal of consistent product quality.
Similar anti-aging skincare: serums, night creams, facial peels, wrinkle patches and anti-aging devices to consider
Frequently asked questions
What does azelaic acid do for skin?
Azelaic acid is an active ingredient that may help with the appearance of uneven skin tone, visible pores, and surface texture. It works by encouraging gentle cell turnover and is often used to address the look of post-breakout marks or dullness. It is not a medical treatment, but it has a strong record of use in both over-the-counter and prescription-strength skincare. The over-the-counter concentrations in serums like this one are generally on the gentler end.
Can I use azelaic acid with other serums?
Azelaic acid is generally compatible with other actives, but layering acids requires care. It tends to pair well with hyaluronic acid and niacinamide. Use caution when layering with other exfoliating acids, as combining them can increase sensitivity. If you're using a retinol or strong vitamin C serum in your routine, apply them at different times of day or alternate evenings to avoid overloading the skin barrier.
How often should I use this serum?
Most azelaic acid serums are designed for once or twice daily use, but starting with once daily in the evening allows your skin to adjust. The moisturizing benefit listed for this formula suggests it was designed to be used regularly without stripping the skin. Always follow with an SPF in the morning when using any acid-based product, as acids can increase sun sensitivity.