Retino Collagen Gua Sha Neck Cream
Retino Collagen Gua Sha Neck Cream
Product Description
Product overview
A clinically tested anti-aging neck cream powered by 300-dalton low-molecular collagen and retinal (200 ppm), delivered via patented Flexible Liposome technology. Comes with a built-in stainless steel Gua Sha roller for lymphatic drainage massage, targeting neck wrinkles, sagging jawline, and loss of elasticity. Developed by Chong Kun Dang, a trusted South Korean pharmaceutical company.
300 Da Small Molecule Collagen
Ultra-low molecular weight collagen (300 daltons) penetrates deeper than standard collagen for improved absorption and wrinkle-filling from within.
Texture & feel
SENSORY300 Da Small Molecule Collagen
Ultra-low molecular weight collagen (300 daltons) penetrates deeper than standard collagen for improved absorption and wrinkle-filling from within.
Retinal (3rd-Gen Retinoid)
More potent than retinol, retinal converts to retinoic acid in just one step, accelerating cell turnover and collagen synthesis in the neck area.
Flexible Liposome Technology
Patented delivery system encapsulates active ingredients in liposomes for deeper skin penetration and sustained release of retinal and collagen.
Built-in Stainless Steel Gua Sha
Integrated roller massages lymph nodes, improves blood circulation, enhances product absorption by 3–4x, and provides a cooling de-puffing effect.
Safety & compatibility
SAFEContains Retinal, a form of vitamin A retinoid. Retinoids are not recommended during pregnancy or breastfeeding. Consult your doctor before use.
Contains Caprylic/Capric Triglyceride, Cetearyl Olivate, Sorbitan Olivate, Polysorbates, and fatty acid esters that may feed Malassezia yeast.
Formula is unlikely to clog pores. Suitable for most skin types including those prone to occasional breakouts.
Clinically tested for low irritation and hypoallergenic. Suitable for sensitive skin per brand testing.
Retinal increases photosensitivity. Always apply SPF 30+ during the day when using this product, even on the neck and chest area.
Includes Bergamot Fruit Oil, Lavender Oil, and Clary Sage Oil. May cause sensitivity in individuals with essential oil allergies.
Free from drying alcohols. Contains Cetearyl Alcohol which is a fatty alcohol that acts as an emollient, not an irritant.
Start using 2–3 times per week and gradually increase to daily use. This allows your skin to build tolerance to retinal.
Ingredient breakdown
INGREDIENTSHydrolyzed Collagen Extract 71.73%Proven
Ultra-low molecular weight (300 daltons) hydrolyzed collagen serves as the base of this formula. This small molecule size allows it to penetrate deeper into the skin compared to standard collagen molecules (typically 15,000–300,000 daltons), providing hydration and plumping effects from within.
- Molecular Weight: 300 Da — significantly smaller than standard collagen for enhanced absorption
- Function: Humectant, skin-plumping agent, and moisture barrier support
- Clinical: Brand clinical trials show increased collagen levels and improved neck elasticity after 2 weeks
Retinal 200 ppmProven
Retinal (retinaldehyde) is a third-generation retinoid that is one conversion step away from retinoic acid — making it more potent than retinol but gentler than prescription tretinoin. It stimulates cell turnover, boosts collagen production, and reduces the appearance of fine lines and wrinkles.
- Potency: 11x more potent than retinol, only 1 conversion step to retinoic acid
- Research: Studies show retinal improves wrinkles, skin texture, and firmness with less irritation than tretinoin
- Delivery: Encapsulated in Flexible Liposome technology for sustained and deeper delivery
Niacinamide mid-rangeProven
A versatile form of vitamin B3 that brightens skin, strengthens the skin barrier, regulates sebum, and fades hyperpigmentation. Works synergistically with retinal to improve overall skin tone and texture on the neck area.
- Benefits: Brightening, barrier repair, anti-inflammatory, pore-minimizing
- Synergy: Pairs well with retinal — helps reduce irritation while boosting brightening effects
- Evidence: Extensively studied at 2–5% for visible skin tone improvement
Hyaluronic Acid & Sodium Hyaluronate supportingProven
Powerful humectant that draws moisture into the skin and holds up to 1,000x its weight in water. The combination of Hyaluronic Acid and Sodium Hyaluronate provides multi-layer hydration at different skin depths.
- Hydration: Brand claims up to 100 hours of sustained moisturization
- Function: Plumps fine lines by drawing water into the skin matrix
- Synergy: Works with collagen and ceramides to reinforce the moisture barrier
Ceramide NP supportingProven
A skin-identical lipid that restores the skin barrier. Especially important for the delicate neck area which has thinner skin and fewer oil glands than the face, making it more vulnerable to moisture loss.
- Function: Reinforces lipid barrier, locks in hydration, reduces transepidermal water loss
- Importance: Counteracts the drying potential of retinal, keeping the neck skin balanced
Palmitoyl Tripeptide-5 tracePromising
A signal peptide that mimics the body's natural mechanism (thrombospondin-1) to stimulate collagen production. Helps firm and tighten skin from deeper layers when used consistently.
- Mechanism: Activates TGF-β signaling, prompting fibroblasts to produce new collagen
- Studies: In vitro studies show significant increase in collagen I, III, and IV production
Adenosine functionalProven
A KFDA-approved anti-wrinkle ingredient commonly found in K-Beauty products. Boosts collagen synthesis and has anti-inflammatory properties to soothe irritation caused by retinal.
- Regulation: Officially recognized by Korea's MFDS as a functional wrinkle-improvement ingredient
- Function: Promotes wound healing, increases collagen, and smooths texture
72 ingredients
Water, Glycerin, Caprylic/Capric Triglyceride, Butylene Glycol, Pentylene Glycol, Niacinamide, 1,2-Hexanediol, Cetearyl Olivate, Hydrogenated Polyisobutene, Sorbitan Olivate, Polyglyceryl-3 Methylglucose Distearate, Vinyl Dimethicone, Diisostearyl Malate, Glyceryl Stearate, Caprylyl Methicone, Erythritol, Cetearyl Alcohol, Glucose, Chlorella Vulgaris Extract, Carbomer, Ammonium Acryloyldimethyltaurate/VP Copolymer, Fructooligosaccharides, Fructose, Citrus Aurantium Bergamia (Bergamot) Fruit Oil, Melia Azadirachta Flower Extract, Ocimum Sanctum Leaf Extract, Palmitic Acid, Ethylhexylglycerin, Dipotassium Glycyrrhizate, Stearic Acid, Adenosine, Melia Azadirachta Leaf Extract, Lavandula Angustifolia (Lavender) Oil, Hydrogenated Lecithin, Sodium Phytate, Retinal, Curcuma Longa (Turmeric) Root Extract, Corallina Officinalis Extract, Salvia Sclarea (Clary) Oil, Hydrolyzed Collagen, Ceramide NP, Theobroma Cacao (Cocoa) Seed Extract, Dextrin, Glycine, Serine, Glutamic Acid, Tromethamine, Dipropylene Glycol, Cynanchum Atratum Extract, Aspartic Acid, Alanine, Lysine, Arginine, Tyrosine, Phenylalanine, Proline, Threonine, Valine, Isoleucine, Histidine, Cysteine, Methionine, Sodium Hyaluronate, Hydrolyzed Elastin, Palmitoyl Tripeptide-5, Tocopherol, Althaea Rosea Flower Extract, Hyaluronic Acid, Hydrogenated Lecithin, Corallina Officinalis Extract, Chlorella Vulgaris Extract
Where it fits in your routine
ROUTINEApply after serums but before sunscreen. Use AM & PM. At night, skip sunscreen and let the retinal work overnight. Always apply SPF to neck during the day.
How to use
HOW TO USEDispense the Cream
Press the tube to release an appropriate amount of cream. Apply dots of product from your collarbone up to your jawline.
Massage with Gua Sha Roller
Using the built-in stainless steel Gua Sha roller, gently massage in upward strokes along the neck, shoulders, and upper chest area. Always roll upward against gravity.
Target Problem Areas
Roll along smile lines, forehead, and under-eye area for bonus lifting effects. Focus on the jawline for contouring and de-puffing benefits.
Clean & Close
Wipe off any excess cream from the roller after use. Allow the roller to dry completely before closing the cap to maintain hygiene.
Who is it for?
WHOPerfect for you if:
- You have visible neck lines, wrinkles, or "tech neck" creases
- Your jawline is losing definition or you notice sagging
- You want a dedicated anti-aging treatment for the neck and décolleté
- You enjoy the ritual of Gua Sha massage but want convenience
- You are 25+ and interested in preventative neck care
- You want pharmaceutical-grade K-Beauty backed by clinical trials
Consider alternatives if:
- You are pregnant, breastfeeding, or planning pregnancy (contains retinal)
- You have fungal acne / Malassezia folliculitis on the neck area
- You are very sensitive to essential oils (contains bergamot, lavender, clary sage)
- You are already using a prescription retinoid (risk of over-exfoliation)
- You prefer completely fragrance-free products
- You need a larger size — 50ml can run out quickly when covering neck and chest
Skin type compatibility
SKIN TYPESIdeal match. Rich serum-cream texture absorbs well, delivers retinal and collagen without overwhelming balanced skin.
Excellent hydration with 71.73% collagen extract, hyaluronic acid, ceramide NP, and lecithin. Claims up to 100 hours moisturization.
Works well but the richer texture may feel slightly heavy on oily necks. Use a smaller amount. Non-comedogenic formula won't clog pores.
Dermatologically tested for sensitive skin. However, retinal and essential oils may cause initial irritation. Start slowly and patch test.
Primary target audience. Retinal + peptides + collagen combination addresses wrinkles, loss of firmness, and elasticity concerns typical of aging neck skin.
Low comedogenic rating (1/5) but not fungal acne safe. Retinal can help with acne, but patch test if your neck is breakout-prone.
Results timeline
WEEKS 8–12Immediate Hydration & Smoothness
Skin feels noticeably more hydrated and softer from the first application. The Gua Sha roller provides an instant de-puffing and cooling effect. Brand claims 197.7% increase in hydration after single use.
85% noticed improved hydrationVisible Wrinkle Reduction Begins
Fine neck lines start to appear softer as retinal accelerates cell turnover. Clinical trials show improvement in thick and fine neck wrinkles after 2 weeks of use. Skin texture starts to feel smoother.
70% noticed smoother neck textureFirming & Elasticity Improvement
Collagen-boosting effects become visible. Neck and jawline feel firmer. The combination of retinal, peptides, and small molecule collagen work synergistically to rebuild skin structure. Clinical tests show 23% improvement in nasolabial folds.
65% noticed improved firmnessSignificant Lifting & Rejuvenation
Full anti-aging benefits are evident. Deep wrinkles appear reduced, jawline contours are more defined, and neck skin looks visibly younger. Double chin lifting effects documented in clinical trials. Best results with consistent twice-daily use.
60% noticed lifting & contouringRatings by platform
13K+ REVIEWSPros & cons
BALANCEDPraised
- Built-in Gua Sha roller makes application easy and provides a spa-like massage ritual
- Visible hydration improvement from the first use — skin feels immediately softer
- Pharmaceutical-grade formulation backed by Chong Kun Dang's research heritage
- Retinal is more effective than retinol with less irritation than prescription retinoids
- 71.73% collagen extract concentration is exceptionally high
- Clinical trials with documented results for wrinkle reduction and lifting
- Cooling stainless steel roller helps with de-puffing and circulation
- Available at Costco for excellent value (2-pack)
Criticized
- 50ml tube is small and may only last 3–4 weeks with twice-daily use on neck and chest
- Roller hygiene concern — the wheel contacts the cream inside the tube
- Contains essential oil fragrance (bergamot, lavender) that some find bothersome
- Not pregnancy or breastfeeding safe due to retinal content
- Not fungal acne (Malassezia) safe — multiple triggering ingredients
- Results on deep, established wrinkles may be modest — best for prevention and mild lines
- Must use sunscreen on neck daily due to retinal-induced photosensitivity
Budget-friendly alternatives (dupes)
DUPESAlso a K-Beauty neck cream with high-concentration collagen (110,000 ppm). Lacks retinal and Gua Sha roller, but offers similar firming and hydrating benefits at a lower price. Lighter, milky texture.
Delivers retinoid benefits at a fraction of the cost, but uses retinol (less potent than retinal) and lacks collagen, peptides, and the Gua Sha applicator. Not neck-specific but can be applied to neck area.
Similar concept with multi-peptide, retinol, collagen, and hyaluronic acid formula plus built-in roller. Larger 4.3 fl oz size offers better value per ml, but uses standard retinol instead of retinal.
Comparison with competitors
SIDE-BY-SIDETOSOWOONG Collagen Necktox Cream
No7 Restore & Renew Neck Multi Action Serum
RoC Multi Correxion Firming & Hydrate Cream
Storage & shelf life
12 MONTHS12 months after opening
Store in a cool, dry place away from direct sunlight. Retinal degrades with light and heat exposure. Keep cap tightly closed.
Squeeze tube with integrated stainless steel Gua Sha roller applicator. Refill tubes available separately without roller.
Yes — 50ml / 1.69 fl oz is under the 100ml carry-on limit. Compact tube fits easily in toiletry bags.
Frequently asked questions
FAQNo. This product contains Retinal (retinaldehyde), which is a vitamin A derivative (retinoid). All retinoids are contraindicated during pregnancy and breastfeeding due to potential risk to fetal development. If you are pregnant, breastfeeding, or planning to become pregnant, discontinue use and consult your healthcare provider. The TOSOWOONG Collagen Necktox Cream is a retinoid-free neck cream alternative.
No. This product contains several ingredients that can feed Malassezia yeast, including Caprylic/Capric Triglyceride, Cetearyl Olivate, Sorbitan Olivate, Glyceryl Stearate, Polysorbate-type emulsifiers, and various fatty acid esters. If you have fungal acne (Malassezia folliculitis) on your neck or chest area, this product may aggravate the condition.
Use with caution. This cream already contains Retinal (a potent retinoid), so layering additional retinol or retinoids on the neck may cause excessive irritation, peeling, and dryness. You can use vitamin C in the morning and this neck cream at night to avoid irritation. Avoid combining with AHA/BHA exfoliants on the same area at the same time — alternate days or use exfoliants on face only. Niacinamide (already in the formula) pairs well with all actives.
This neck cream works best for normal, dry, and mature skin types. The rich, hydrating formula with 71.73% collagen extract is especially beneficial for dry and aging skin that lacks moisture and elasticity. It is dermatologically tested for sensitive skin, though the retinal and essential oils may require patch testing. Oily skin types can still use it with a lighter application. It is most effective for those 25+ concerned with neck wrinkles, sagging, and loss of firmness.
Hydration improvements are noticeable from the first application. According to clinical trials conducted by the brand, visible improvement in thick and fine neck wrinkles occurs after approximately 2 weeks of consistent use. More significant firming, lifting, and elasticity improvements typically appear at 4–8 weeks. For optimal results, use twice daily (morning and night) and allow 8–12 weeks for the full anti-aging benefits to develop.
Apply this neck cream after your facial serums and before sunscreen (in the morning). The recommended order is: Cleanser → Toner → Serum → Eye Cream → This Neck Cream → Sunscreen (AM only). At night, skip sunscreen and let the retinal work overnight. Apply from the collarbone upward to the jawline using the built-in Gua Sha roller in upward strokes.
This product has a low comedogenic rating of 1 out of 5, meaning it is very unlikely to clog pores. While it contains some emollients and fatty alcohols (Cetearyl Alcohol, Glyceryl Stearate), the overall formulation is designed to be non-comedogenic. The retinal content also helps promote cell turnover, which can actually help keep pores clear. However, it is not fungal acne safe due to certain esters and triglycerides in the formula.
The product has a PAO (Period After Opening) of 12 months. The 50ml tube typically lasts 3–6 weeks with twice-daily use on the neck and décolleté area. Store away from direct sunlight and heat to preserve the retinal stability. Keep the Gua Sha roller cap tightly closed and wipe it clean after each use for hygiene. Refill tubes are available for purchase separately.
Verdict: The CKD Retino Collagen Gua Sha Neck Cream is an innovative and well-formulated K-Beauty neck treatment that stands out from competitors thanks to its 71.73% low-molecular collagen base, clinical-grade retinal, and the built-in stainless steel Gua Sha roller that transforms daily application into a lifting massage ritual. Backed by Chong Kun Dang's pharmaceutical expertise and multiple clinical trials, it delivers on hydration immediately and shows measurable anti-aging improvements within 2–4 weeks. The main downsides are the small tube size (50ml runs out fast), natural fragrance from essential oils, and it is not safe for pregnancy or fungal acne-prone skin. For anyone over 25 looking for a dedicated, clinically proven neck care solution with retinoid power, this is one of the best K-Beauty options on the market.
Product Overview
Quick product notes are a great way to check if a product is free from commonly avoided ingredients by skincare enthusiasts. These preferences come about for different reasons depending on the ingredient such as personal experiences, sensitivities, health preferences & etc.
Just because a product is not free from a common preference does not mean it's a bad product! You can make a personal decision whether or not you want to use a product that contains these ingredients or not - click the labels of the preference to read more about them.
Quick Product Notes
Ever used a product that promised a certain effect but provided no results? It might not have contained any notable ingredients that could have been responsible for that promised effect. It doesn't matter what the marketing or packaging «promises» it can do, if it doesn't contain anything that can help - then the likelihood of it helping is low.
We help you identify key notable ingredients that have been shown to help with effects such as acne-fighting, brightening, UV-protection, wound healing & anti-aging to help you achieve your skincare goals smarter. Please note that different notable ingredients have varying levels of research behind them, some are extremely well proven yet some have mixed research in their efficacy.
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Be smart and use this as just a starting point for you to make more informed and smarter choices and compare it with reviews to see if the product is right for you
Notable Effects & Ingredients
Why are some products great for some people and horrible for others? Well everyone has different skin types and different reactions to the same ingredients.
We've identified a range of ingredients that are commonly regarded as potentially good or bad for those with Dry, Oily/Acne-Prone or Sensitive skin.
A product that contains good or bad ingredients for your skin type doesn't always flat out make the entire product good or bad for your skin. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine your skins reaction.
One of the best ways to use this section is to troubleshoot products you've had bad experiences with in the past. Check if it contains any of the marked ingredients to point out suspect ingredients to avoid in the future!
Ingredients Related to Skin Types
Ingredient Safety Breakdown refers to the percentage % of ingredients in different risk categories as classified by EWG (Environment Working Group) if they are available. There are almost endless cosmetic ingredients and they are one of the few organisations globally that have assigned ratings to a lot of the more commonly used ingredients which is why we reference them.
EWG is seen by many to be more on the alarmist side in their assignment of health ratings resulting in rating ingredients as riskier than they actually are. We recommend using this a reference point rather than a strict guide of ingredient safety and to always do further research if into ingredients that you may find suspect.
Ingredient Safety Breakdown
Product ingredient list
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
| 1 |
Water
Solvent, Skin Conditioning
|
|
|
| 2 |
Glycerin
Solvent, Perfuming, Fragrance, Humectant, Viscosity Decreasing Agent, Hair Conditioning, Skin Protecting, Denaturant, Skin Conditioning
|
Promotes Wound Healing
Hydrating
|
|
| 1 |
Caprylic/Capric Triglyceride
Solvent, Skin Conditioning, Masking, Perfuming, Emollient
|
|
|
| 1 |
Butylene Glycol
Solvent, Skin Conditioning, Masking, Fragrance, Humectant, Viscosity Controlling, Viscositydecreasing Agent
|
Hydrating
|
|
| 1 |
Pentylene Glycol
Solvent, Skin Conditioning
|
|



