DESCRIZIONE

Highlights

Why This Bundle

Most people quit retinol in the first two weeks because of the dryness and flaking, and the sandwich method exists to prevent exactly that: a layer of moisturizer under the retinol and another over it, so the active is buffered without being blocked. This kit gives you every layer. Purito's unscented Centella Serum calms first, ZEROID's Intensive Cream is the buffer both under and over, COSRX's Retinol 0.1 Cream is the gentle starting strength, and Round LAB's Birch Sunscreen protects the next morning. Fragrance-free, dermatologically tested, and built so you actually make it past week two.

Benefits

Best For

What's Included

Step 1 · Serum: Purito Seoul Wonder Releaf Centella Serum (Unscented) (60ml)

Step 2 · Moisturizer: ZEROID Intensive Cream (80ml)

Step 3 · Retinol Cream: COSRX The Retinol 0.1 Cream (20ml)

Step 4 · Sunscreen: Round LAB Birch Moisturizing Sunscreen UVLock SPF 45+ (50ml)

How to Use

Evening: after cleansing and toner, press Centella Serum into the skin, then apply a thin layer of ZEROID Intensive Cream and wait 5 minutes.
Apply a pea-sized amount of COSRX Retinol 0.1 Cream over the face, avoiding eyes and lips. Wait 5 minutes, then apply ZEROID Intensive Cream again.
Start 2 nights a week and build up. Every morning, finish your routine with Birch Moisturizing Sunscreen.

Sandwich Method Order (PM):

Centella Serum Thin Layer of Cream Retinol 0.1 Cream Again Sunscreen (AM)

Key Ingredients

Centella Asiatica Extract, Madecassoside, Niacinamide, MLE® Skin-Identical Lipids, Ceramide, Cholesterol, 0.1% Retinol, Adenosine, Panthenol, Birch Sap, Hyaluronic Acid, UV Filters

How to use

Evening, 2 nights a week to start:
1. After cleansing and toner, press 2–3 pumps of Purito Seoul Wonder Releaf Centella Serum Unscented into the skin.
2. Apply a thin layer of ZEROID Intensive Cream and wait about 5 minutes for it to absorb.
3. Apply a pea-sized amount of COSRX The Retinol 0.1 Cream evenly over the face, avoiding the eye and lip areas. Wait 5 minutes.
4. Apply a second layer of ZEROID Intensive Cream over the top.
Every morning:
5. Finish your routine with two finger-lengths of Round LAB Birch Moisturizing Sunscreen UVLock SPF 45+.
Note: Build to 3–4 nights a week over 6–8 weeks as tolerated. Mild dryness is normal; skip a night if skin flakes. Do not combine with exfoliating acids on the same night. Not recommended during pregnancy or breastfeeding.

What it is & why it works

What it is: A four-product retinol starter kit for the sandwich method: Purito Seoul Wonder Releaf Centella Serum Unscented (60ml), ZEROID Intensive Cream (80ml), COSRX The Retinol 0.1 Cream (20ml) and Round LAB Birch Moisturizing Sunscreen UVLock SPF 45+ (50ml).
Why it works: Retinol irritation happens when the active hits a dry, unprotected barrier all at once. The sandwich method slows its delivery: a first layer of moisturizer means the retinol releases gradually, and the second layer stops overnight water loss while it works. Centella and madecassoside in the Purito serum calm the skin before anything else goes on, and ZEROID's MLE® skin-identical lipids make it the ideal buffer, restoring the barrier rather than just coating it. At 0.1%, COSRX's retinol is the recommended starting strength, effective on fine lines and texture yet gentle enough to build tolerance. The birch sunscreen protects newly sensitised skin the next day, which is what keeps results and prevents damage.

Retinol Starter Kit (Sandwich Method): Purito Wonder Releaf Centella Serum + ZEROID Intensive Cream + COSRX Retinol 0.1 Cream + Round LAB Birch Sunscreen

KKUMIDA

Retinol Starter Kit (Sandwich Method): Purito Wonder Releaf Centella Serum + ZEROID Intensive Cream + COSRX Retinol 0.1 Cream + Round LAB Birch Sunscreen

Name: Retinol Starter Kit (Sandwich Method): Purito Wonder Releaf Centella Serum + ZEROID Intensive Cream + COSRX Retinol 0.1 Cream + Round LAB Birch Sunscreen
Brand: KKUMIDA
Price: 86.99 CHF
Availability: InStock

CHF 86.99 CHF 87.96

Doveri e tasse inclusi. Spedizione calcolato al momento del pagamento.

Start retinol without the burn: the sandwich method, with every layer included.

Quantità

Dispatched in 24h
14-Day return policy
Free Samples

Full Ingredients

Purito Seoul Wonder Releaf Centella Serum Unscented

Water, Glycerin, Dipropylene Glycol, Propanediol, Centella Asiatica Extract(34,860ppm), Butylene Glycol, Niacinamide, 1,2-Hexanediol, Sodium Hyaluronate, Panthenol, Madecassoside, Asiaticoside, Madecassic Acid, Asiatic Acid, Centella Asiatica Callus Extracellular Vesicles(10ppm), Allantoin, Palmitoyl Tetrapeptide-7, Palmitoyl Hexapeptide-12, Palmitoyl Tripeptide-1, Palmitoyl Dipeptide-10, Carbomer, Polyglyceryl-10 Laurate, Polyglyceryl-10 Myristate, Hydrolyzed Jojoba Esters, Tromethamine, Ethylhexylglycerin, Xanthan Gum, Dipotassium Glycyrrhizate, Adenosine, Disodium EDTA, Sucrose Stearate, Glyceryl Stearate, Hydrogenated lecithin, Polyglyceryl-10 Stearate, Ceramide NP, Camellia Sinensis Leaf Extract, Pancratium Maritimum Extract

ZEROID Intensive Cream

Water, Propanediol, Caprylic/capric triglyceride, Glycerin, Cetearyl alcohol, Polyglyceryl-10 distearate, Squalane, Glyceryl stearate, Stearic acid, Bisabolol, Myristoyl/palmitoyl oxostearamide/arachamide MEA(Ceramide), Phytosterols, Cetyl palmitate, Sorbitan palmitate, Dimethicone, Sorbitan olivate, Tocopheryl acetate, Methyl caprooyl tyrosinate(Defensamide), Olea europaea (Olive) fruit oil, Butyrospermum parkii (Shea) butter, Canola oil, Xanthan gum, Sodium hyaluronate, 1,2-hexanediol, Caprylyl glycol

COSRX The Retinol 0.1 Cream

Water, Caprylic/Capric Triglyceride, Propanediol, Glycerin, Tocopheryl Acetate, Cetearyl Alcohol, Trehalose, Panthenol, Butyrospermum Parkii (Shea) Butter, Glycine Soja (Soybean) Oil, Ammonium Acryloyldimethyltaurate/VP Copolymer, Dimethicone, Glyceryl Polymethacrylate, Helianthus Annuus (Sunflower) Seed Oil, Polyglyceryl-10 Stearate, Hydrogenated Lecithin, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Carbomer, Tromethamine, Glyceryl Stearate, Polysilicone-11, Sodium Sulfite, Tocopherol, Daucus Carota Sativa (Carrot) Root Extract, Retinol (0.1%), Allantoin, Glyceryl Caprylate, Oryza Sativa (Rice) Bran Wax, Tocotrienols, Stearic Acid, Polyglyceryl-3 Methylglucose Distearate, Palmitic Acid, Disodium EDTA, Ethylhexylglycerin, Adenosine, Sorbitan Isostearate, Elaeis Guineensis (Palm) Oil, BHT, Beta-Carotene, Myristic Acid, Lauric Acid, Ascorbic Acid, Limnanthes Alba (Meadowfoam) Seed Oil, 3-O-Ethyl Ascorbic Acid, Glutathione, Sodium Hyaluronate, 1,2-Hexanediol, Hydrolyzed Hyaluronic Acid, Sodium Hyaluronate Crosspolymer, Hyaluronic Acid, Sodium Acetylated Hyaluronate

Round LAB Birch Moisturizing Sunscreen UVLock SPF 45+

Purified Water, Dibutyl Adipate, Propanediol, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Polymethylsilsesquioxane, Ethylhexyl Triazone, Niacinamide, Methylene Bis-Benzotriazolyl Tetramethylbutylphenol, Coco-Caprylate/Caprate, Caprylyl Methicone, Diethylhexyl Butamido Triazone, Glycerin, 1,2-Hexanediol, Butylene Glycol, Betula Platyphylla Japonica (Birch) Sap (1,425 ppm), Sodium Hyaluronate, Hyaluronic Acid, Glyceryl Glucoside, Dipotassium Glycyrrhizate, Allantoin, Portulaca Oleracea Extract, Artemisia Annua Extract, Pinus Sylvestris Leaf Oil, Chamomilla Recutita (Matricaria) Flower Oil, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Sodium Stearoyl Glutamate, Polyacrylate Crosspolymer-6, Ethylhexylglycerin, Ascorbic Acid, Adenosine, Pentylene Glycol, Behenyl Alcohol, Poly(C10-30) Alkyl Acrylate, Polyglyceryl-3 Methylglucose Distearate, Decyl Glucoside, Tromethamine, Xanthan Gum, t-Butyl Alcohol, Tocopherol, Carbomer

Trust & Transparency

Is this product cruelty-free?

Yes—everything we sell is cruelty-free. We never sell products tested on animals. Vegan options are clearly tagged “Vegan” (cruelty-free ≠ automatically vegan).

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Our six tags help you choose fast: Alcohol-Free, Fragrance-Free, Pregnancy-Friendly*, Clean Ingredients, Vegan, and Dermatologist-Tested.

*Always patch test. If you're pregnant or breastfeeding, please consult your physician first. Read the full guide → Meet the Six

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100% authentic products—brand-new, sealed, and traceable to official sources. We source directly from authorized channels. If anything feels off, contact us and we’ll make it right.

How do I use & layer this?

AM: Cleanse (gentle wake-up wash) → Tone/Mist (quick hydrating sip) → Treat (essence/serum/ampoule) → Eye cream (tap gently around the eye area) → Moisturize (seal in hydration) → SPF (don’t skip!).
PM: Double cleanse (oil/balm to remove makeup & SPF → water-based cleanser) → Tone/Mist → Masks or Devices (optional; 2–3 times a week) → Treat (essence/serum/ampoule) → Eye cream → Moisturize.

New to K-Beauty? Follow the “thin → thick” rule: start with watery (toner/essence) → then lighter serums → then cream → finish with sunscreen in the morning.
Caution: Avoid layering strong acids (AHA/BHA/PHA/peeling solutions) with retinoids on the same night, and introduce actives slowly if you have sensitive skin.

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