The MEDITHERAPY Retinal Skin Booster Serum is a Korean skincare product formulated with retinal (retinaldehyde), niacinamide, hyaluronic acid, centella asiatica and other skin-conditioning ingredients. It is marketed to improve the appearance of fine lines, uneven texture, dullness and enlarged pores while providing hydration.
Customer feedback is generally positive. Hwahae reports a 4.17/5 rating, with 77% positive feedback in its review analysis. Go Picky lists a higher 4.7/5 rating from 1,142 reviews, although some reviews were submitted in exchange for products. Customers commonly praise its lightweight texture, hydration and smoother-looking skin. Some report irritation, breakouts or less dramatic results than expected.
The formula’s listed retinal concentration is 100 ppm (0.01%). This is a relatively low concentration, making it an option to consider for people who want to introduce retinal into their skincare routine, although irritation is still possible.
Our verdict: MEDITHERAPY Retinal Serum is a promising beginner-friendly retinal product for improving skin texture and supporting an anti-ageing routine. However, results take time, and its marketing claims should not be confused with independently established clinical outcomes.
What Is MEDITHERAPY Retinal Skin Booster Serum?
MEDITHERAPY Retinal Skin Booster Serum is a Korean facial treatment designed to support smoother, brighter and more hydrated-looking skin.
Unlike ordinary hydrating serums, it contains retinal, a vitamin A derivative used in skincare to improve the appearance of fine lines, uneven texture and signs of photoaging.
The product is available in a large 150 ml format, while some sellers also list a smaller 20 ml version. Check the bottle size carefully because the two formats have different prices and amounts of product.
The serum is marketed for concerns such as:
- Fine lines and wrinkles.
- Uneven skin texture.
- Dullness and uneven tone.
- Visible pores.
- Dehydrated skin.
- Early signs of ageing.
It combines retinal with ingredients intended to support hydration and skin comfort.
MEDITHERAPY Retinal Serum Reviews: What Are Customers Saying?
Customer feedback is generally encouraging, although ratings differ between review platforms.
| Review platform | Rating | Review information |
|---|---|---|
| Hwahae | 4.17/5 | 77% positive feedback |
| Go Picky | 4.7/5 | 1,142 reviews |
| StyleKorean | 4.9/5 | 63 reviews |
These ratings come from different platforms and review populations, so they should not be combined into a single overall score.
Positive customer reviews
Customers who like the serum frequently mention:
- Lightweight texture: It spreads easily and absorbs without feeling excessively heavy.
- Hydration: Some users say their skin feels softer and more moisturized.
- Smoother texture: Reviewers report improvements in the feel and appearance of uneven skin.
- Gentler experience: Some users with combination or sensitive skin describe it as easier to tolerate than stronger retinoid products.
- Generous quantity: The 150 ml version is particularly appealing to customers who want a larger bottle.
One Hwahae reviewer reported that the serum helped fade blemish marks and reduced the frequency of breakouts. Another customer said it felt moisturizing and that they had already started using a second bottle.
Go Picky reviewers also praise its smooth texture and gradual improvements in skin appearance. However, some reviews on that platform were submitted by users who received the product for free, so this should be considered when evaluating the ratings.
Negative customer reviews
Not everyone experiences the same results. Common complaints include:
- Tingling or discomfort on sensitive skin.
- Small breakouts after starting the product.
- Irritation or a harsh feeling.
- Limited improvement in wrinkles or elasticity.
- Results that are less dramatic than expected.
One Hwahae reviewer described improved hydration and skin texture but also reported occasional inflamed breakouts. Another said the serum felt uncomfortable when their skin was particularly sensitive.
Customer-review takeaway: The serum appears to perform well as a lightweight hydrating retinal product, but sensitive or acne-prone users should introduce it carefully.
Ingredients: What Makes MEDITHERAPY Retinal Serum Different?
The formula contains 64 listed ingredients, combining a low concentration of retinal with moisturizing, soothing and skin-conditioning components.
1. Retinal (100 ppm)
Retinal, also known as retinaldehyde, is a vitamin A derivative.
It is used in skincare to support skin-cell renewal and improve the appearance of:
- Fine lines.
- Uneven texture.
- Dullness.
- Some forms of discoloration.
- Visible signs of photoaging.
MEDITHERAPY lists the concentration as 100 ppm, equivalent to 0.01%. Retinal is generally considered more potent than conventional retinol because it requires one conversion step to become retinoic acid in the skin, compared with two for retinol.
However, concentration alone does not determine how effective or irritating a formula will be. The delivery system, stability, overall formulation and individual skin tolerance also matter.
2. Niacinamide
Niacinamide is a form of vitamin B3 commonly used to improve the appearance of uneven skin tone and support the skin barrier.
It may help with:
- Dullness.
- Uneven-looking complexion.
- Excess surface oil.
- Skin-barrier support.
It complements retinal by providing additional skin-conditioning benefits.
3. Hyaluronic acid and glycerin
These are humectants that help attract and retain water.
They support hydration and can make skin feel smoother and more comfortable. This is useful in a retinal formula because retinoids can sometimes cause dryness.
4. Centella asiatica
Centella asiatica, often called cica, is widely used in Korean skincare products.
It is included for its soothing and skin-conditioning properties. The formula also contains centella-derived compounds such as madecassoside, asiaticoside and madecassic acid.
5. Ceramide NP and beta-glucan
Ceramide NP is a skin-identical lipid used to support the skin barrier, while beta-glucan is a moisturizing and skin-conditioning ingredient.
Their inclusion is a positive formulation feature, although they cannot guarantee that every user will avoid irritation from retinal.
Does MEDITHERAPY Retinal Serum Actually Work?
There is a reasonable skincare basis for using retinal to improve the appearance of fine lines and uneven texture. However, the results depend on regular use, the concentration and how well the skin tolerates the product.
MEDITHERAPY advertises clinical results involving improvements in fine lines, firmness and uneven skin tone after four weeks. Its product page reports improvements of 108% in fine lines, 109% in firmness and 101% in uneven skin tone. These are brand-reported results, and the figures should not be interpreted as independently verified percentages of improvement for every user.
For a more realistic expectation:
| Skin concern | What to expect |
|---|---|
| Fine lines | Gradual improvement with consistent use |
| Uneven texture | Potential improvement over time |
| Dullness | May look brighter with regular use |
| Dehydration | Hydrating ingredients can improve skin feel |
| Dark spots | Possible gradual improvement, but not guaranteed |
| Deep wrinkles | Limited results from a low-strength cosmetic serum |
| Acne | Not a dedicated acne treatment |
Retinal is not an overnight solution. A consistent routine over several weeks is more realistic than expecting dramatic changes after a few applications.
How to Use MEDITHERAPY Retinal Serum
Retinal should be introduced gradually, particularly if you have never used a retinoid.
A sensible starting routine is:
- Cleanse your face with a gentle cleanser.
- Allow your skin to dry.
- Apply a small amount of serum according to the product instructions.
- Follow with a moisturizer.
- Use sunscreen during the day.
Start with two evenings per week. If your skin tolerates it, gradually increase frequency rather than immediately applying it every night.
Avoid applying it close to the eyelids, corners of the nose or lips if those areas are prone to irritation.
Can you use it every day?
Possibly, once your skin has built up tolerance. Daily use is not necessary for everyone, and more frequent application does not automatically produce better results.
Avoid introducing multiple strong active ingredients at the same time. In particular, be cautious about combining retinal with exfoliating acids or other retinoids until you know how your skin responds.
Side Effects and Safety
Retinal is an active vitamin A ingredient, so irritation is possible even at a relatively low concentration.
Potential side effects include:
- Dryness.
- Redness.
- Peeling.
- Tingling or burning.
- Increased sensitivity.
- Temporary worsening of irritation.
If you experience persistent redness, swelling or discomfort, stop using the serum and seek professional advice.
Pregnancy precaution: Retinoids are generally avoided during pregnancy as a precaution. Do not use this product while pregnant; ask your healthcare professional about suitable alternatives. If breastfeeding, seek individual medical advice before use.
Daily broad-spectrum sunscreen is important when using a retinoid, particularly if you are also treating pigmentation or uneven skin tone.
MEDITHERAPY Retinal Serum Price: Is It Worth It?
The official product listing retrieved for this review showed:
- 20 ml trial size: $8.99 promotional price, with a listed reference price of $12.99.
- 150 ml full size: $24.99 promotional price, with a listed reference price of $30.00.
These prices are from the brand’s US storefront and may change. The 20 ml and 150 ml products should not be confused when comparing deals.
Hwahae lists a Korean suggested retail price of approximately $26.03 for the 150 ml product.
For Indian shoppers, the final cost may be higher after shipping, currency conversion, taxes and customs charges. Check the seller’s authenticity and final checkout price before ordering.
MEDITHERAPY Retinal Serum Pros and Cons
Pros
- Contains retinal at 100 ppm (0.01%).
- Lightweight, easy-to-spread texture.
- Includes niacinamide and hydrating ingredients.
- Contains centella asiatica and ceramide NP.
- Generally positive customer feedback.
- Large 150 ml size available.
- Suitable for people interested in introducing a low-concentration retinal product.
Cons
- May cause dryness, tingling or irritation.
- Some users report breakouts.
- Results take time and are not guaranteed.
- Brand-reported clinical percentages need cautious interpretation.
- Not suitable during pregnancy.
- The large bottle may not be ideal if you are unsure whether your skin tolerates retinal.
Is MEDITHERAPY Retinal Serum Legit?
MEDITHERAPY is an established Korean skincare brand, and its Retinal Skin Booster Serum is listed on several beauty-shopping and review platforms, including Hwahae, Go Picky and StyleKorean.
The product has a substantial online review presence, although ratings vary between platforms. This supports the conclusion that it is a genuine commercial skincare product, but it does not prove every advertised benefit.
When purchasing, use the brand’s official store or a reputable retailer. Be cautious of unusually cheap listings from unknown sellers, particularly for popular Korean skincare products.
Final Verdict: Should You Buy MEDITHERAPY Retinal Serum?
MEDITHERAPY Retinal Skin Booster Serum is worth considering if you want a lightweight, low-concentration retinal product with additional hydrating and skin-conditioning ingredients.
Its biggest advantages are the 0.01% retinal concentration, niacinamide, hyaluronic acid, centella and generally positive customer feedback. The large 150 ml bottle also offers good value compared with many smaller facial serums.
However, it is not irritation-free. Some customers report breakouts or discomfort, and the brand’s impressive clinical marketing figures should be treated as promotional claims rather than guaranteed outcomes.
Our verdict: 4.3/5 — a promising beginner-oriented retinal serum for texture and early signs of ageing, provided your skin tolerates retinoids.
Start slowly, moisturize consistently and use sunscreen. If you are pregnant, avoid it; if you have sensitive or reactive skin, patch test and consider professional advice before introducing retinal.
Frequently Asked Questions
1. Is MEDITHERAPY Retinal Serum good?
It receives generally positive reviews for its lightweight texture, hydration and improvements in skin texture. It may be a useful option for people looking to introduce a low-concentration retinal product.
2. What percentage of retinal does MEDITHERAPY contain?
The brand lists 100 ppm of retinal, equivalent to 0.01%.
3. Is MEDITHERAPY Retinal Serum suitable for beginners?
Its low listed retinal concentration makes it worth considering for beginners, but it can still cause irritation. Start with only a few applications per week.
4. Can I use MEDITHERAPY Retinal Serum every night?
Only if your skin has gradually built tolerance and you can use it without irritation. Nightly use is not essential for everyone.
5. Does MEDITHERAPY Retinal Serum help with wrinkles?
Retinal can improve the appearance of fine lines over time. However, the low concentration means results may be gradual, and deep wrinkles are unlikely to disappear.
6. Can it help with dark spots?
Retinal and niacinamide may help improve the appearance of uneven tone and some dark spots. Consistent sunscreen use is essential for managing pigmentation.
7. Can I use it with vitamin C?
It may be possible to use vitamin C in the morning and retinal at night. Introduce each ingredient separately and avoid adding multiple strong actives at once.
8. Is MEDITHERAPY Retinal Serum safe for sensitive skin?
Some reviewers with sensitive skin report good experiences, but others mention tingling and irritation. Patch testing and gradual introduction are important.
9. Can I use MEDITHERAPY Retinal Serum during pregnancy?
No. Retinoid skincare products are generally avoided during pregnancy as a precaution. Ask your healthcare professional about alternatives.
10. How long does MEDITHERAPY Retinal Serum take to show results?
Some users report early improvements in hydration and texture, but visible changes in fine lines and uneven tone generally require consistent use over several weeks or longer.
Nikhil Sharma is the author and researcher behind Review Trails, where he shares shopping website reviews, product insights, and scam or legit website analysis. He focuses on providing honest, easy-to-understand information that helps readers make safer and smarter online purchasing decisions.