Refresh AHA/BHA Vitamin C Booster Serum

What you need to know

This is a serum from COSRX priced at ₹944.

Key ingredients

This serum claims to offer a triple action of exfoliation, pore clearing, and brightening, implying the presence of AHAs, BHAs, and Vitamin C. Without the full INCI list, it's impossible to pinpoint the exact forms or concentrations of these actives. Generally, AHAs like glycolic or lactic acid exfoliate the skin surface, improving texture and tone. However, overuse or high concentrations can lead to irritation, redness, and increased sun sensitivity. BHAs, primarily salicylic acid, are oil-soluble and penetrate pores to clear congestion, making them excellent for acne-prone skin. The downside is potential dryness, flaking, and irritation, especially if combined with other strong actives. Vitamin C, a powerful antioxidant, brightens skin, reduces hyperpigmentation, and protects against environmental damage. The 'how this goes wrong' for Vitamin C includes oxidation, leading to reduced efficacy, and potential irritation or stinging, particularly for sensitive skin or when formulated incorrectly with other acids.

Who should use this

Individuals with resilient, non-sensitive skin who are looking for a single product to address mild texture issues, clogged pores, and dullness might consider this. It could be suitable for those who have previously used individual AHAs, BHAs, and Vitamin C products without adverse reactions and are confident their skin can tolerate a combination. Given the lack of specific ingredient information, proceed with caution.

Who should skip this

Anyone with sensitive skin, rosacea, eczema, or a compromised skin barrier should absolutely avoid this product. Pregnant women should also skip this due to the unknown concentrations of actives and should stick to 100% mineral sunscreens. Those new to chemical exfoliation or Vitamin C should start with single-active products to assess their skin's tolerance. Combining multiple potent actives in one step significantly increases the risk of irritation, redness, and barrier damage.

How to use

The existing review summary suggests using this serum at night, 2-3 times per week. After cleansing and toning, apply a small amount to the face, avoiding the eye area. Follow with a moisturizer. It is crucial to use a broad-spectrum sunscreen with at least SPF 30 every morning, as AHAs and BHAs increase sun sensitivity. Remember, only one active ingredient per routine is recommended; do not layer this with other exfoliating acids, retinoids, or strong Vitamin C serums.

What users say

The product has garnered 2792 reviews on Nykaa, indicating a high level of interest and purchase. The existing review summary highlights its positioning as a 'triple action' serum for exfoliation, pore clearing, and brightening, and that it is considered more potent than its toner counterpart. Unfortunately, an average score is not available from the summary.

Price context

At Rs944, this serum is positioned in the mid-range for a Korean brand in India. COSRX generally offers good value for its quality. However, for a similar price, one could purchase a dedicated AHA serum, a BHA liquid, or a Vitamin C serum from other reputable brands, allowing for better control over active ingredient usage and potential irritation. While Korean sunscreens are superior in texture and finish compared to Indian counterparts, their higher price is a factor, but that does not apply to this serum.

Final take

While COSRX is a brand we generally trust for its focused and effective formulations, the Refresh AHA/BHA Vitamin C Booster Serum is an outlier for us. Combining multiple potent actives in one product goes against best practices for maintaining a healthy skin barrier and minimizing irritation. We would recommend opting for single-active products from COSRX or other brands instead, allowing for a more controlled and safer approach to skincare.

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