Score computed from verified review sentiment, ingredient efficacy, and cross-platform consistency.
Reviewed by Flash AI Editorial Team · Last updated March 2026.
Users report the serum leaves skin looking noticeably brighter and smoother, with a healthy glow that evens out skin tone and complexion. Multiple sources indicate it effectively targets hyperpigmentation and dark spots, making the skin appear visibly healthier and clearer over time.
The serum absorbs quickly into the skin with a lightweight texture, making it comfortable for daily use and suitable for beginners. It is formulated without sulphates and parabens, contributing to a pleasant user experience.
Blinkit
The serum shows promise in improving skin elasticity and reducing the appearance of fine lines and wrinkles, with some users noting a significant difference over time. It also helps reduce redness associated with acne, contributing to clearer and more resilient skin.
The serum is well-suited to the skin for many users, providing a positive experience that leads some to call it the best they have ever used. Its formulation, containing ingredients like 10% Vitamin C and Niacinamide, targets uneven skin tone and contributes to overall skin health.
Some users experience irritation, redness, itchiness, or a burning sensation after application, indicating potential sensitivity issues. The product may not be suitable for sensitive or acne-prone skin, with a risk of worsening existing conditions or damaging the skin barrier.
Flash AI has analysed more potential drawbacks from verified reviews and expert sources for this product.
Flash AI analyzes thousands of reviews across Amazon, Nykaa, YouTube & Reddit, etc. to give you one honest score — and finds you the best price in India.
The Underated 10% Vitamin C and 5% Niacinamide Serum is a brightening treatment built for daily morning use. It targets hyperpigmentation, dark spots, dullness, and early signs of aging in a lightweight, quick-absorbing formula. This serum earns an AI Score of 88 out of 100 on Flash AI, aggregated from 60 verified reviews across 5 platforms. Its formula and effectiveness scores stand at 100 and 97 respectively, placing it among the stronger performers in its category. Longevity scores at 80 and skin compatibility at 68, a detail worth noting before you commit to daily use.
The formulation centres on three primary actives. L-Ascorbic Acid, the Vitamin C component listed in the active ingredients, appears at 10% concentration and works to brighten skin tone, target dark spots, and provide antioxidant protection. Niacinamide at 5% complements this by improving skin texture, supporting elasticity, and helping reduce redness. Glycerin and Hyaluronic Acid round out the formula with deep hydration, drawing moisture into the skin and sustaining it through the day. The serum also incorporates Prickly Pear Extract, as the product name highlights. Reviewers confirm the formula excludes sulphates and parabens. It comes in a 30g bottle, designed for daily application to the face and neck in smooth circular motions.
This serum suits those dealing with hyperpigmentation, dark spots, and dull skin, and works well across normal, oily, and combination skin types. Beginners find the lightweight texture easy to slot into a morning routine. Reviewers also note improvements in skin elasticity and a reduction in the appearance of fine lines with consistent use over time. However, sensitive and acne-prone skin types should exercise caution. Some users report irritation, redness, itchiness, or a burning sensation after application. The skin compatibility score of 68 out of 100 reflects this, and it signals that the actives in this serum may not suit a compromised or reactive skin barrier. Running a patch test on a small area before committing to daily use is a practical precaution.
Flash AI rates this serum at 88 out of 100, and the review data supports that score. Users consistently report brighter, smoother skin with reduced dark spots and improved tone through regular daily application. At ₹189 on the lower end and ₹398 at the higher end across 8 sellers, the price spread is wide, so comparing platforms before buying gets you the best deal. For the combination of actives it delivers, specifically 10% Vitamin C, 5% Niacinamide, Hyaluronic Acid, and Glycerin, this serum offers clear value at its entry price point. If your skin tolerates potent Vitamin C well, this is a focused daily brightening serum worth adding to your routine.
"With a Flash AI Score of 88/100, Underated 10% VITAMIN C, 5% NIACINAMIDE SERUM POWERED WITH PRICKLY PEAR EXTRACT earns its ranking through demonstrated, cross-platform results."
— Flash AI Editorial TeamUnderated is an Indian skincare brand offering a range of serums, sunscreens, and toning solutions built around proven actives like Glycolic Acid, Salicylic Acid, Vitamin C, Niacinamide, and Hyaluronic Acid. The brand focuses on delivering effective, no-frills formulations at accessible price points. Underated products are widely available across major Indian marketplaces including Amazon, Flipkart, Nykaa, and Purplle.
| Features | 10% Vitamin C, 5% Niacinamide Serum | Minimalist 2% Hyaluronic Acid + Pga | The Derma Co 10% Niacinamide Face Serum | Vilvah Milk Drops Brightening Serum |
|---|---|---|---|---|
| Key Actives | 10% Vitamin C, 5% Niacinamide, L-Ascorbic Acid (Vitamin C) | Hyaluronic Acid, Vitamin B5 | Niacinamide | Alpha Arbutin, Hyaluronic Acid… |
| Best For | general skincare | Women | Sensitive Skin | Pregnant women |
| Fragrance | — | Unscented | — | Unscented |
| Price From | ₹189 | ₹499 | ₹254 | ₹215 |
"Amazing vit C serum Been using it from past few days and can see visible glow. It has runny consistency by which a very little quantity serum van be applied to the whole face. Doesn't irritates the skin and works like a charm."
"Mild tingling on application but nothing unbearable. Leaves the skin dewy and fresh with a nice glow. Too early to judge long‑term results, but I may update after a few weeks."
"I?ve been using the Underated Vitamin C 10% + Niacinamide 5% Serum for a few weeks now and I?m really impressed. The texture feels light and absorbs quickly ..."
Use this serum once daily in the morning. Apply it to a clean face and neck using smooth circular motions, as recommended in the product instructions. Follow with a moisturiser and sunscreen. Consistent daily application is what reviewers credit for the brightening and smoothing results they report over time.
The product specifications list this serum as suitable for all skin types. Verified reviewers report positive results across normal, oily, and combination skin. Those with sensitive or acne-prone skin should approach with caution, as some users in that group report irritation and redness after use.
Niacinamide at 5% targets uneven skin tone, supports skin texture improvement, and helps reduce redness. In this formula, it works alongside 10% Vitamin C to address hyperpigmentation and dullness from two complementary directions. Reviewers note improvements in skin smoothness and clarity with consistent use.
Verified reviewers report noticeably brighter and smoother skin with consistent daily use over time. Those who use the serum across several weeks note visible improvement in dark spots and skin tone. Results vary based on your skin type, the extent of existing pigmentation, and how consistently you apply the serum.
Some users with sensitive or acne-prone skin report irritation, redness, itchiness, or a burning sensation after use. The serum contains L-Ascorbic Acid at 10%, a potent active that can aggravate a compromised or reactive skin barrier. If you have sensitive skin, do a patch test first and consider starting with alternate-day use before building up to daily application.
A standard moisturiser primarily focuses on surface hydration. This serum delivers targeted actives at specific concentrations, including 10% Vitamin C and 5% Niacinamide, designed to address hyperpigmentation, dark spots, and dullness. Its lightweight texture absorbs faster than a heavier cream, making it a treatment step you apply before your moisturiser in a morning routine.
This serum is available across 8 sellers, with prices starting at ₹189 at the lowest end and reaching up to ₹398 at the higher end. Comparing prices across platforms before purchasing helps you secure the best deal. Prices may vary based on the seller and any active offers at the time of purchase.
This serum has a lightweight texture that absorbs quickly into the skin. Reviewers describe it as comfortable and non-heavy for daily use, leaving skin looking brighter and smoother after application. The quick-absorbing formula sits well under moisturiser and sunscreen as part of a morning routine.
The product specifications recommend daily application, and most reviewers tolerate the 10% concentration well, reporting positive results over consistent use. If you are new to Vitamin C actives or have reactive skin, starting with alternate-day use and building up frequency as your skin adjusts is a sensible approach. Some users with sensitive skin report irritation, so your individual tolerance matters here.
This serum fits into a morning routine as a treatment step applied after cleansing and before your moisturiser and sunscreen. If you use other actives such as exfoliants or retinol, applying those at a separate time of day reduces the risk of irritation from layering multiple potent ingredients at once. Reviewers who incorporate this serum into a broader morning routine report positive results with consistent daily use.