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✨ Glow smarter, age slower with MEDITHERAPY’s powerhouse serum!
MEDITHERAPY Retinal Skin Booster Serum is a Korean-formulated, fragrance-free serum featuring advanced Retinaldehyde, Niacinamide, and Cica. Designed for all skin types including sensitive, it offers ultra-gentle, irritation-free daily use with 11x better absorption thanks to micro-particle technology. The 5.07 fl.oz mega size supports full face and body application, targeting uneven skin tone, fine lines, and signs of aging for a radiant, refined complexion.

| ASIN | B0DG4WXBCF |
| Active Ingredients | Adenosine, Niacinamide, Retinaldehyde |
| Benefits | Anti-Ageing, Even Toning, Radiant Skin |
| Best Sellers Rank | 1,365 in Beauty ( See Top 100 in Beauty ) 40 in Face Serums |
| Brand | MEDITHERAPY |
| Brand Name | MEDITHERAPY |
| Country Of Origin | Korea, Republic of |
| Customer Reviews | 4.4 out of 5 stars 14,021 Reviews |
| Item Form | Drop |
| Item Highlight | Retinal, Niacinamide - Pore Refining, Skin Firming & Signs of Aging, Gentle Daily Formula, Korean Skincare |
| Item Volume | 150 Millilitres |
| Item Weight | 220 Grams |
| Manufacturer | KOLMAR KOREA CO. LTD |
| Manufacturer Part Number | Retinal Serum |
| Material Features | Non-Comedogenic, Vegan |
| Number of Items | 1 |
| Product benefits | Anti-Ageing, Even Toning, Radiant Skin |
| Recommended Uses For Product | Enlarged Pores, Fine lines, Hyperpigmentation, Loss of Elasticity |
| Scent | Fragrance Free |
| Scent Name | Fragrance Free |
| Skin Type | All |
| Skin type | All |
| Special Ingredients | Retinal |
| Special ingredients | Retinal |
| Target Use Body Part | Face, Neck, Whole Body |
| Unit Count | 150.0 millilitre |
| Use for | Face, Neck, Whole Body |
D**Y
Love it
I like this serum. Makes my skin nice and soft and glowy without feeling too heavy and greasy. That said, I haven’t noticed any major changes in dark spots. Regardless I will carry on as love the feel, the size and the price. No smell that I noticed or find overpowering. It absorbs really well and quickly. I use it morning and evening
J**N
Excellant
This product is great for mature skin, soaks in like a dream, along with other Korean products works wonders on mature skin it has retinal not retinol in it a lot gentler, stronger than retinol,don't know what I did without it no peeling if you guide how much I put on, definitely need sun screen, leaves soft,gives youthful appearance. If your realistic and realise that no u won't get rid of very deep lines it does soften them to the eye.. I will keep on buying this booster. I would say it's on par perhaps better than Medix crystal 1 for face.and that's saying something. I used to buy the Medix crystal which is also retinal for approx 50 pounds every 2/3 months. This is a fraction of the price,I'm delighted. Thank you brilliant booster julie
L**2
Lovely serum
No complaints it’s a lovely serum and a nice big bottle so excellent value for money - has not affected my sensitive skin one bit- will definitely buy again, and again!
J**O
Boosts the skin
Very good, my skin feels better and my products sink in to my skin better after applying this. Definitely recommend!!
A**W
Great vale
Love this for my sensitive skin it doesn’t irritate my psoriasis either will definitely buy again a small amount goes a long way so great value
J**S
Subtle change to skin
I’m unsure if this is making much difference. I do have a lot of dry patches on my skin and this seems to make them worse. My skin broke out when I first started using, I did read that is normal. Whilst I don’t have quite as many blemishes from breakouts I do still have some. I let this soak in then apply generous moisturiser after. I think my skin is a little brighter but dark sun spots unchanged. Will persevere with product as other reviews are very good.
C**S
Lovely serum that feels great on my skin
I’ve been really pleased with this serum. It feels lovely going onto the skin, absorbs well and doesn’t leave my face feeling heavy or greasy. I’ve found it easy to add into my skincare routine and my skin feels soft and smooth after using it. The bottle is also a generous size compared with many facial serums, so it should last a good while. So far I’m very happy with it and will continue using it.
A**A
Retinol Serum
Really impressed with this, only been using it for a week and can see a difference in my skin, you do need extra moisturising on top of this, will buy this again as it's good value too.
M**E
とにかくオススメ!
初めて使った翌日の朝、肌がふっくらして目元の皺がない! 使いはじめは日を空けて使用との事ですが、私の場合ピリピリしたり反応がなかったので、毎晩使用しています。 使っていて1番嬉しかったのは、お風呂上がりに脇の皺やポツポツに1プッシュずつ塗り込んでいると、1週間くらいで随分キレイになってきました!効果抜群です! お値段もお手頃なので、身体の気になるところにはこれからも塗りこんでいます。 同じ様な悩みがある方、とにかくオススメです!
Q**D
0,01 % Retinal – ideal für empfindliche Haut
Ich finde dieses Serum wirklich gelungen. Besonders interessant ist für mich das Preis-Leistungs-Verhältnis: 150 ml im Pumpspender machen es zu einem sehr günstigen All-over-Retinal-Serum aus Korea, das man nicht nur im Gesicht, sondern auch großzügig an Hals, Dekolleté und Körper verwenden kann. Die wichtigste Information musste ich allerdings erst recherchieren: Das Serum enthält 0,01 % Retinal (100 ppm). Schade, dass die Konzentration nicht deutlicher angegeben wird. 0,01 % klingt zunächst wenig, hat für mich aber absolut seine Berechtigung. Gerade für Retinoid-Einsteiger, empfindliche Haut sowie Hals und Dekolleté finde ich eine niedrigere Konzentration sinnvoll. Bei Retinoiden ist mehr nicht automatisch besser – entscheidend ist schließlich auch, dass die Haut das Produkt verträgt und man es regelmäßig verwenden kann. Auch die restliche Formulierung gefällt mir sehr gut. Niacinamid steht relativ weit vorne in der INCI-Liste. Eine genaue Konzentration konnte ich allerdings nicht finden und möchte deshalb keine Prozentzahl behaupten. Dazu kommen Centella asiatica und verschiedene Centella-Bestandteile, außerdem unter anderem Beta-Glucan, Panthenol, Ceramide NP, Cholesterin und Vitamin E. Das finde ich als Begleitung zu einem Retinoid sehr schön. Besonders hervorheben möchte ich Glycerin. Dieser hervorragende Feuchtigkeitsspender wird meiner Meinung nach völlig unterschätzt und muss sich hinter der wesentlich stärker vermarkteten Hyaluronsäure keineswegs verstecken. Die Textur ist leicht und angenehm. Gerade für fettige Haut finde ich sie sehr passend. Durch das Glycerin ist das Serum direkt nach dem Auftragen ein klein wenig klebrig, was mich persönlich aber nicht stört. Bei trockener Haut würde ich anschließend definitiv noch eine Creme verwenden, da das Serum alleine dafür nicht reichhaltig genug ist. Generell gefällt mir der Ansatz von MEDITHERAPY: Eine durchdachte Formulierung muss nicht mit möglichst hohen Wirkstoffkonzentrationen überladen sein. Gerade bei empfindlicher Haut ist weniger manchmal tatsächlich mehr. Wer bereits gut an Retinoide gewöhnt ist und eine stärkere Wirkung möchte, sollte sich eher die MEDITHERAPY Retinal Skin Booster Cream mit 0,05 % Retinal (500 ppm) und 100 ml ansehen. Für Einsteiger, empfindliche Haut oder als großzügiges Retinalprodukt für Gesicht, Hals, Dekolleté und Körper finde ich dieses Serum mit 0,01 % Retinal und 150 ml aber wirklich empfehlenswert – besonders für den Preis.
D**S
Cumple
Suave, para principiantes pero se ven resultados.
S**N
Bof
Pas vue de difference
A**V
Does not irritate sensitive skin plus amazingly fast results.
Update: This product deserves the 5 stars. I began using this in late March 2026. It is now mid-late June 2026 and I can confidently say that this is giving me the benefits of retinal without any of the side effects I normally experience. My skin is clearer, brighter, softer, and just looks very healthy. Results are subtle and gradual over time. I can confidently say that this product works and I don’t know what kind of Hoodoo they put in here to make it so gentle but has not caused a single blemish, no rosacea flares while using this, and my skin looks and feels great. I’m an Aveda grad, I know quality skin care and you absolutely don’t have to pay enormous amounts of money. OTC retinol products are mostly all within the same range of strengths (either mild or moderate). There’s simply no reason to spend $100 on a serum when you can purchase a lower cost serum that offers the same results. One note here about retinol vs retinal(this product contains retinal vs retinol: retinal is a form of retinol that is biologically closer to retinoic acid. Retinoic acid is the only form your skin can use and OTC products require your skin to do the conversion. Some of the strength is lost during this conversion process. Retinoic acid is not available as a OTC product. It requires a prescription because it is much stronger. Basically retinol needs 2 conversions in your skin to create retinoic acid. Like this: 2 steps: retinol → retinal → retinoic acid. Retinal is 11 times closer to retinoic acid than retinol. It is usually more irritating than retinol because it’s stronger. This is simply not the case with this particular product. This is gentle and works faster than retinol. This is a quality product at an extremely reasonable cost. I’ve been using it since late March and I’m still not up for a refill and already seeing results. This is a keeper for sure. Original review: I have not been using this for long so I will be updating this review after 6 months. As of right now, this is one of the ONLY retinol based products that does not trigger my rosacea. I use it with heavy moisturizers. I was previously using ROC serum stick which triggered my rosacea just using it twice a week. When paired with a good moisturizer this does not disrupt my skin barrier. This is extremely important because I’m not going to keep using anything that triggers acne like pustules on my face. I’d rather deal with wrinkles and signs of aging. I will update my review once I have either seen results or not seen results but I thought it was important to let others know that with proper skincare I am able to use this product even though I have very sensitive skin. I could not find information like this when I was considering purchasing the product. I’d also like to mention that the amount of product here is large. You could definitely use this on other areas aside from the face and not break the bank. None of this matters, of course, unless the product works. I can’t comment on that just yet but I will update my review after 3-6 months of usage.
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