# COSRX Deep Wrinkle Care Boost

Age-care duo: 0.3% retinol night cream plus a vitamin C serum.

- Brand: COSRX
- Product: Deep Wrinkle Care Boost
- Price: $26.99
- Availability: Out of stock
- Made in: Republic of Korea
- Category: Serums & Ampoules

## Key benefits

- Retinol is declared at 0.3% on the ingredient list itself
- Vitamin C and glutathione cover the brightening side of the pairing
- Shea butter, soybean oil and hyaluronate forms cushion the retinol
- Adenosine and tocotrienols round out the smoothing support

## How it works

A boost step is a treatment layer rather than a whole routine: it goes on after toner and before moisturizer, and it is the part of a routine that changes when a concern changes. This one is named for the look of lines, which is slow work measured over months rather than weeks. It belongs in the evening, on skin that has been cleansed and toned, with a plain moisturizer over the top. Skin new to a treatment step of any kind does better easing in over a few evenings a week rather than starting nightly. Sunscreen the following morning is part of any routine built around a line-care step.

## How to use

1. Use the Deep Wrinkle Care Boost after toner and before moisturizer, in the evening.
2. A few drops or a thin layer over the face, kept clear of the eyelids and the corners of the mouth.
3. Toner first, this second, then a plain moisturizer over the top.
4. Start at two or three evenings a week and build from there. Do not stack it with an exfoliating acid on the same evening.

## Ingredients

Water, Caprylic/Capric Triglyceride, Butylene Glycol, Glycerin, Glycine Soja (Soybean) Oil, Tocopherol, Tocopheryl Acetate, Cetearyl Alcohol, Trehalose, Panthenol, Butyrospermum Parkii (Shea) Butter, Ammonium Acryloyldimethyltaurate/VP Copolymer, Dimethicone, Glyceryl Polymethacrylate, Polyglyceryl-10 Stearate, Hydrogenated Lecithin, Helianthus Annuus (Sunflower) Seed Oil, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Carbomer, Retinol(0.3%), Tromethamine, Glyceryl Stearate, Polysilicone-11, Sodium Sulfite, Daucus Carota Sativa (Carrot) Root Extract, Allantoin, Glyceryl Caprylate, Propanediol, Oryza Sativa (Rice) Bran Wax, Tocotrienols, Stearic Acid, Polyglyceryl-3 Methylglucose Distearate, Palmitic Acid, Ethylhexylglycerin, Disodium EDTA, Adenosine, Sodium Hyaluronate, Sorbitan Isostearate, 1,2-Hexanediol, Elaeis Guineensis (Palm) Oil, Hydrolyzed Hyaluronic Acid, Beta-Carotene, Sodium Hyaluronate Crosspolymer, Myristic Acid, Hyaluronic Acid, Lauric Acid, Sodium Acetylated Hyaluronate, Ascorbic Acid, Limnanthes Alba (Meadowfoam) Seed Oil, 3-O-Ethyl Ascorbic Acid, Glutathione

## FAQ

### What is the Deep Wrinkle Care Boost actually built around?

Retinol is declared at 0.3% on the ingredient list, appearing after a cushioning base of shea butter, soybean oil and cetearyl alcohol, so it sits in a formula designed to support it rather than deliver it alone. Ascorbic acid, 3-O-ethyl ascorbic acid and glutathione appear further down as the brightening side of the formula, alongside adenosine and sodium hyaluronate. This is a two-part formula pairing a declared-percentage retinol with a brightening actives group rather than a single-ingredient product.

### Can retinol-sensitive skin tolerate a formula like this?

The list is built around a heavy cushioning base, shea butter, soybean oil, sunflower seed oil and tocopherol among them, which is typical of formulas meant to buffer retinol for skin new to it. Fragrance, essential oil, denatured alcohol and paraben are all absent from the list. Retinol at any declared strength can still cause dryness or flaking while skin adjusts, so starting at a lower frequency is the standard approach regardless of the buffering ingredients around it.

### Does retinol at 0.3% work immediately or does it take time?

Retinol works through gradual cell turnover rather than an overnight change, so the declared 0.3% concentration here is meant to be used consistently over weeks rather than expected to show results after a few nights. Skin often goes through an adjustment period of mild dryness or sensitivity before it settles into a routine with a retinol product. Consistency, not frequency, is what determines whether the formula does its job over time.

### How should this pair with sunscreen and other actives?

Retinol increases how sensitive skin can feel toward sun exposure, so a separate daytime sunscreen step is standard practice whenever a retinol product is in a routine, though that sunscreen is not part of this list itself. The brightening actives here, ascorbic acid and 3-O-ethyl ascorbic acid, are generally used at a different time of day from the retinol side. Check both products' own instructions for the exact order that suits your skin.

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Page: https://korean-pharmacy.com/products/cosrx-deep-wrinkle-care-boost