COSRX Vitamin C 23% Peptide Booster Set

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84%
91%
Brightening Effectiveness
88%
Anti-Aging Benefits
85%
Hydration & Skin Texture
89%
Skin Compatibility (Normal to Dry)
84%
Peptide Effectiveness (Elasticity)
87%
Absorption & Finish
75%
Scent/Fragrance
80%
Packaging & Dispensing
83%
Application Experience
85%
Long-Term Results
92%
Value for Money
70%
Safety/Tolerance (Patch Test)
More

Overview

The COSRX Vitamin C 23% Peptide Booster Set combines a powerful Vitamin C serum with a peptide-enriched toner. This skincare duo targets a variety of skin concerns, including dullness, fine lines, and uneven texture. The full-sized products are designed to work together, enhancing skin radiance and improving elasticity. Users will appreciate the hydrating benefits of the toner, which preps the skin for the potent effects of the Vitamin C serum. The set is ideal for those looking to rejuvenate their skin and achieve a brighter, more youthful complexion.

Key Ingredients & Benefits

This set’s main highlight is the Vitamin C serum, with a high 23% concentration that helps brighten the skin while fading dark spots. The inclusion of 6 peptides in the toner is another standout feature, improving skin elasticity and reducing the appearance of fine lines. Both products are formulated without parabens or sulfates, making them suitable for sensitive skin types. The combination of these active ingredients provides antioxidant protection, boosts hydration, and works toward a firmer, more radiant complexion with consistent use.

Best For

The COSRX Vitamin C 23% Peptide Booster Set is particularly beneficial for individuals with normal to dry skin looking to target issues like uneven tone and loss of elasticity. It is well-suited for those who want a lightweight yet effective serum and toner that work to improve overall skin texture. Anyone looking for anti-aging benefits, especially reducing fine lines and restoring radiance, will find this set helpful. It’s also great for those who appreciate a clean, gentle formula free from harsh chemicals.

User Feedback

Users are generally impressed with the results of this skincare duo, with many praising its ability to noticeably brighten the skin and smooth out fine lines over time. Reviewers often highlight the lightweight yet hydrating formula, noting that the products absorb easily without feeling greasy. However, some recommend performing a patch test due to the high Vitamin C concentration, as a few users experienced mild irritation. Overall, most feedback reflects positive outcomes in terms of hydration and skin texture improvement.

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Pros

  • This serum provides noticeable hydration without feeling greasy, making it ideal for daily use.
  • Users report visible brightening effects after consistent use, especially for uneven skin tone.
  • The lightweight formula is non-greasy and suitable for layering with other skincare or makeup products.
  • Peptides in this skincare duo help improve skin elasticity, minimizing the appearance of fine lines.
  • The Vitamin C concentration is high enough to deliver antioxidant protection without causing irritation for most users.
  • This set is perfect for normal to dry skin, providing both hydration and anti-aging benefits.

Cons

  • Some users with sensitive skin experienced irritation, especially due to the high Vitamin C concentration.
  • It may feel too heavy for those with oily or combination skin, especially in warmer climates.
  • A few users noted that the results take time to show, and they were hoping for faster improvements.
  • The scent might be too strong for individuals who prefer fragrance-free or subtle products.
  • A small number of buyers reported that it caused minor breakouts, likely due to the active ingredients.
  • Not everyone finds the toner and serum combination to be a perfect match for their routine, requiring adjustments.

Ratings

After analyzing verified user reviews from multiple global platforms and languages, the ratings for the COSRX Vitamin C 23% Peptide Booster Set reflect a balanced mix of strengths and areas for improvement. Authentic, high-quality feedback was prioritized, filtering out spam, incentivized, and off-topic reviews. The product is highly praised for its brightening and anti-aging effects, although some users note the high Vitamin C concentration requires caution. These scores represent a diverse range of experiences, providing a comprehensive look at its performance across different skin types and concerns.

Brightening Effectiveness
91%
Many users have noticed a visible improvement in their skin's brightness after consistent use. This serum and toner combination helps reduce dark spots and promotes an even skin tone, making it a popular choice for individuals dealing with dullness. The results are often seen in as little as a few weeks, providing a refreshed, glowing complexion.
A few users feel that while the product brightens skin, the results are not as dramatic as they expected. For some, it took longer to notice a difference, and those with deeper skin tones mentioned the brightening effect was subtler than anticipated.
Anti-Aging Benefits
88%
Reviewers frequently highlight the anti-aging effects of this duo, with many reporting a reduction in fine lines and wrinkles over time. The peptide-enriched formula supports skin elasticity, which helps firm the skin and smooth out the appearance of fine lines, making it ideal for those seeking anti-aging solutions.
Not all users experienced significant improvements in fine lines or skin firmness. Some mentioned that the results were gradual and not as noticeable as they had hoped, particularly for more pronounced signs of aging.
Hydration & Skin Texture
85%
This skincare duo is praised for its ability to hydrate the skin without making it feel greasy. Many users with dry skin report feeling softer, more hydrated skin that lasts throughout the day. The lightweight formula makes it suitable for use under makeup or as part of a daily skincare routine.
While most users find it hydrating, some with extremely dry or sensitive skin feel that the product doesn’t provide enough moisture. A few mentioned that it wasn’t quite rich enough for their needs, especially during colder months.
Skin Compatibility (Normal to Dry)
89%
The product is well-received by those with normal to dry skin, as it absorbs quickly and doesn’t leave a sticky residue. Many users appreciate that the formula is gentle enough for daily use and that it supports skin hydration without irritation, making it a good choice for sensitive skin.
Some users with very oily or acne-prone skin reported breakouts or a feeling of heaviness after use. The lightweight consistency doesn’t always work well for those with more oily skin, as they may need a more mattifying product.
Peptide Effectiveness (Elasticity)
84%
The peptides in this set are praised for supporting skin elasticity, with many reviewers noting that their skin feels firmer and smoother after using it for several weeks. This is especially beneficial for users in their 30s or older looking to improve skin texture and tone.
Not everyone saw noticeable improvements in skin elasticity, especially those with more significant sagging. Some users felt that the product was more effective for brightening and hydrating than for boosting skin firmness.
Absorption & Finish
87%
The product absorbs quickly into the skin without leaving a greasy or sticky finish. It leaves the skin feeling smooth, with a natural finish that makes it suitable for layering under other skincare or makeup products. Users appreciate that it doesn’t feel heavy even with daily use.
A few users mentioned that it takes slightly longer to absorb than they expected, especially when using both the toner and serum. Some felt that it left a slight residue on their skin, though it wasn’t enough to be a deal-breaker for most.
Scent/Fragrance
75%
25%
For many users, the light fragrance is a refreshing addition to their skincare routine, offering a mild citrus scent that feels clean and invigorating. It’s not overpowering and dissipates quickly, making it ideal for those who prefer subtle scents.
However, a few users found the scent to be a bit too strong or artificial, which led to a less enjoyable experience. Those with fragrance sensitivities might not appreciate it, as it can linger longer than expected for some users.
Packaging & Dispensing
80%
20%
The packaging is sleek and functional, with both the serum and toner housed in sturdy, well-designed bottles. The pump dispenser is convenient for controlled application, minimizing waste and allowing for precise use.
Some users noted that the pump mechanism occasionally malfunctions, leading to inconsistent dispensing. While the bottles are well-made, a few found the design a bit bulky for travel, preferring smaller, more portable packaging.
Application Experience
83%
The application process is simple and straightforward, with the toner being easy to apply with a cotton pad, followed by the serum that glides on smoothly. Users appreciate the lightweight texture, making it easy to incorporate into their routine without feeling heavy or sticky.
A small number of users found the toner a bit too watery and wished it had a slightly thicker consistency for better control during application. Others felt that they needed to use more product than expected for optimal results.
Long-Term Results
85%
With consistent use, many users report a noticeable improvement in skin radiance and elasticity. The long-term benefits include smoother, brighter skin with a reduction in dark spots and fine lines, making this product ideal for those looking for lasting effects from their skincare routine.
Some users expressed that the long-term results didn’t meet their expectations, particularly those seeking more immediate improvements. It can take several weeks or even months to see significant changes, which may be disappointing for those expecting faster results.
Value for Money
92%
For the quality and effectiveness of the ingredients, many users feel that this duo offers great value for money. The full-sized products last for a considerable time, and the combination of Vitamin C and peptides delivers notable benefits for skin health and appearance.
A few users felt the price was slightly high compared to other Vitamin C serums on the market, especially for those just starting their skincare journey. While the results are good, some found the cost to be a bit of a stretch for their budget.
Safety/Tolerance (Patch Test)
70%
30%
Many users with normal to dry skin did not experience any irritation or sensitivity, and the formula is gentle enough for daily use. The paraben and sulfate-free formulation is appreciated by those with sensitive skin.
Due to the high concentration of Vitamin C, some users experienced redness, irritation, or breakouts, especially those with sensitive or acne-prone skin. A patch test is highly recommended, as the formula can be too potent for some individuals.

Suitable for:

The COSRX Vitamin C 23% Peptide Booster Set is ideal for individuals with normal to dry skin looking to improve hydration, brightness, and elasticity. Those dealing with uneven skin tone or dullness will benefit from its brightening properties, especially those seeking gradual, long-term results. Users looking for anti-aging benefits will appreciate the peptide infusion that supports skin firmness and reduces the appearance of fine lines. This product is especially effective for those who want lightweight yet hydrating formulas that fit seamlessly into their daily skincare routines, whether for morning use under makeup or as part of an evening regimen.

Not suitable for:

This product may not be ideal for users with oily or acne-prone skin, as some found it too heavy or prone to causing breakouts. Due to the high concentration of Vitamin C, individuals with sensitive skin should proceed with caution and perform a patch test, as irritation or redness can occur. Additionally, those expecting quick, dramatic results in terms of fine lines or elasticity might be disappointed, as the product provides gradual improvements over time. If you're seeking a more intensive or rapid anti-aging solution, this might not deliver the immediate impact some users expect.

Specifications

  • Product Type: Serum and toner set designed for skin brightening and anti-aging.
  • Main Ingredients: Contains 23% Vitamin C and 6 peptides to promote skin health.
  • Vitamin C Concentration: The serum contains a potent 23% Vitamin C concentration to brighten skin and fade dark spots.
  • Peptides: 6 peptides are included to improve skin elasticity, minimize fine lines, and support overall skin health.
  • Formulation: The product is lightweight and non-greasy, providing hydration without a heavy feeling.
  • Skin Type Compatibility: Best suited for normal to dry skin types due to its lightweight yet hydrating formula.
  • Free From: Paraben-free and sulfate-free, making it suitable for sensitive skin.
  • Full-Sized Products: Both products in the set are full-sized, offering long-term value.
  • Application Order: Use the toner first to hydrate and prep skin, followed by the Vitamin C serum.
  • Packaging: The set includes two full-sized bottles, one for the toner and one for the serum.
  • Fragrance: The product has a mild, non-overpowering fragrance.
  • Hydration: The toner and serum work together to provide noticeable hydration, especially for dry skin.
  • Anti-Aging Benefits: Both products target signs of aging by improving skin texture and minimizing fine lines.
  • Brightening Effects: Regular use can result in brighter skin by reducing dark spots and enhancing radiance.
  • Patch Test Recommendation: Due to the high Vitamin C concentration, users should perform a patch test before full application.
  • Long-Term Use: Consistent use over several weeks is recommended for visible results in skin brightening and anti-aging.
  • Storage: Store the products in a cool, dry place, away from direct sunlight to maintain potency.
  • Cruelty-Free: The product is not tested on animals.

FAQ

To use this product, start with the toner. Apply it first on clean skin, then follow up with the Vitamin C serum. Use the toner to hydrate and prep the skin, and then apply the serum to target brightening and anti-aging benefits. Both products are lightweight and can be used morning and night for best results.

The COSRX Vitamin C 23% Peptide Booster Set contains a high concentration of Vitamin C (23%), which helps brighten skin, reduce dark spots, and provide antioxidant protection. This potent formula works by targeting uneven skin tone and dullness, making it ideal for those seeking a brighter complexion.

While this set is paraben and sulfate-free, it is important to note that the high Vitamin C concentration may cause irritation for some people with very sensitive skin. It’s recommended to perform a patch test before applying it to the entire face, especially if you have a history of sensitivity to Vitamin C.

Yes, this set can be used by people with oily skin. The formula is lightweight and non-greasy, which allows for hydration without clogging pores. However, if you have extremely oily skin, you may prefer to use it sparingly to avoid excess shine.

Yes, the COSRX booster set contains six peptides that help improve skin elasticity and minimize the appearance of fine lines and wrinkles. Regular use of both the toner and serum can contribute to a smoother, more youthful-looking complexion over time.

Many users notice gradual improvements in skin brightness and texture within a few weeks of consistent use. However, for more significant anti-aging effects, it may take a couple of months of regular use. Patience is key when using products with active ingredients like Vitamin C.

Yes, there is a light fragrance to the toner and serum, but it is generally mild and dissipates quickly. If you are sensitive to fragrances, this may not be ideal for you, and it's recommended to patch test first.

Yes, both the toner and the serum are lightweight and absorb quickly into the skin, making them great for wearing under makeup. The formula won’t feel heavy or greasy, and it helps create a smooth base for foundation or other products.

It’s generally not recommended to combine multiple high-concentration Vitamin C products as this may cause irritation. If you're already using another Vitamin C product, it’s best to introduce the COSRX Vitamin C serum gradually, or alternate its use to avoid overstimulating your skin.

This set is particularly beneficial for individuals with normal to dry skin. The lightweight yet hydrating formula helps with moisture retention, and the anti-aging properties work well for mature skin. However, those with oily or very sensitive skin may want to proceed with caution and patch test first.