# K-SECRET SEOUL 1988 Serum for oily acne-prone skin

**Lovi Fit: Average fit for oily acne-prone skin.**
Oily Skin Fit: Average · Effectiveness: Average · Safety: High.

Page: https://lovi.care/skincare/fr/p/k-secret/seoul-1988-serum/for/oily-acne-prone-skin

The Lovi Fit is the same in every country; only the stores and prices differ, and the ones here are for France.

Brand: [K-SECRET](https://lovi.care/skincare/fr/brands/k-secret)
Category: [Serums and treatments](https://lovi.care/skincare/fr/best/serums)

This fit is calculated for the concerns frequently associated with oily acne-prone skin: shine, breakouts, blemishes, and enlarged pores. For scores based on a full skin profile (12D face scan, goals, preferences), use the Lovi app.

Works for oily acne-prone skin; other serums fit it better.

## Why this fit

- Offers moderate suitability for oily skin as niacinamide provides some oil control, while retinal and bakuchiol offer anti-aging benefits that are not directly relevant to your primary concerns of acne and blemishes.
- Glycerin and other humectants provide general hydration, but the formula lacks specific ingredients to effectively target breakouts or significantly reduce oiliness.
- The product is safe for your oily skin, with no harsh or prohibited ingredients that would cause irritation.

## Fit by skin type

- [Oily skin](https://lovi.care/skincare/fr/p/k-secret/seoul-1988-serum/for/oily-skin): Average
- [Dry skin](https://lovi.care/skincare/fr/p/k-secret/seoul-1988-serum/for/dry-skin): Average
- [Combination skin](https://lovi.care/skincare/fr/p/k-secret/seoul-1988-serum/for/combination-skin): Average
- [Sensitive skin](https://lovi.care/skincare/fr/p/k-secret/seoul-1988-serum/for/sensitive-skin): Average
- [Acne-prone skin](https://lovi.care/skincare/fr/p/k-secret/seoul-1988-serum/for/acne-prone-skin): Average
- [Skin with dark spots](https://lovi.care/skincare/fr/p/k-secret/seoul-1988-serum/for/dark-spots): Average
- [Mature skin](https://lovi.care/skincare/fr/p/k-secret/seoul-1988-serum/for/mature-skin): Average
- [Dry sensitive skin](https://lovi.care/skincare/fr/p/k-secret/seoul-1988-serum/for/dry-sensitive-skin): Average
- [Oily acne-prone skin](https://lovi.care/skincare/fr/p/k-secret/seoul-1988-serum/for/oily-acne-prone-skin): Average (this page)

## Key ingredients

Retinal, Panax Ginseng Root Extract, Niacinamide, Bakuchiol, 3-O-Ethyl Ascorbic Acid

## What the research says

- Topical bakuchiol 0.5% applied twice daily compared with retinol 0.5% applied daily significantly decreased wrinkle surface area and hyperpigmentation with no statistical difference between the compounds in 44 patients over 12 weeks, while retinol users reported more facial skin scaling and stinging. ([The British Journal of Dermatology, 2019](https://pubmed.ncbi.nlm.nih.gov/29947134/))
- Topical application of a serum containing supramolecular Bakuchiol and Terminalia chebula extract significantly improved barrier function, reduced redness and sensitivity, and improved wrinkles and elasticity in 34 Chinese subjects with sensitive skin after 28 days. ([Health Science Reports, 2025](https://pubmed.ncbi.nlm.nih.gov/41424674/))
- A dermocosmetic containing bakuchiol, Ginkgo biloba extract, and mannitol improves inflammatory lesions, Investigator Global Assessment, and seborrhea intensity when added to adapalene 0.1% gel in patients with acne vulgaris. ([Clinical, Cosmetic and Investigational Dermatology, 2015](https://pubmed.ncbi.nlm.nih.gov/25914553/))
- Microneedling combined with topical exosome therapy improved PIH severity scores from grade 2 to grade 1 and enhanced skin tone in two acne patients without causing adverse effects. ([Plastic and Reconstructive Surgery. Global Open, 2025](https://pubmed.ncbi.nlm.nih.gov/40672793/))
- Twice daily application of retinaldehyde 0.1% and 0.05% creams for 3 months improved skin texture and hydration and reduced transepidermal water loss in 40 female Korean volunteers, with only the 0.1% cream significantly improving the melanin index. ([Journal of Cosmetic Dermatology, 2018](https://pubmed.ncbi.nlm.nih.gov/29663701/))
- Topical retinaldehyde demonstrated significant antibacterial activity against gram-positive bacteria both in vitro and in vivo, leading to decreased bacterial counts without inducing resistance. ([Dermatology, 2002](https://pubmed.ncbi.nlm.nih.gov/12218231/))
- Topical 0.05% retinaldehyde applied over 1 year significantly increased epidermal thickness of the temple and cutaneous elasticity compared to an emollient control group in 40 aging skin patients. ([Dermatology, 1999](https://pubmed.ncbi.nlm.nih.gov/10473959/))
- Enzyme-modified ginseng extract cream significantly reduced the global photo-damage score and various roughness measures including total roughness, smoothness depth, and arithmetic roughness average compared to placebo in 23 human subjects. ([Rejuvenation Research, 2015](https://pubmed.ncbi.nlm.nih.gov/25867599/))
- A red ginseng hydrogel formulation with 1,2-hexanediol promoted selective growth of Staphylococcus epidermidis and decreased Cutibacterium acnes in 20 female subjects. ([Journal of Ginseng Research, 2022](https://pubmed.ncbi.nlm.nih.gov/35509819/))
- A 1% fermented black ginseng cream significantly reduced eye wrinkles and brightened skin color in twenty-three human subjects compared to control cream and baseline. ([Journal of Toxicology and Environmental Health. Part A, 2020](https://pubmed.ncbi.nlm.nih.gov/32564709/))
- Topical post-laser application of human adipocyte-derived mesenchymal stem cell media combined with niacinamide significantly improved wrinkle index, melanin index, patient satisfaction, and investigator esthetic improvement scores compared to vehicle cream in patients with aging skin. ([Journal of Cosmetic Dermatology, 2021](https://pubmed.ncbi.nlm.nih.gov/33103316/))
- Topical nicotinamide prevented solar-simulated UV-induced immunosuppression in healthy volunteers, and men experienced immunosuppression at solar-simulated UV doses three times lower than those required for women. ([The Journal of Investigative Dermatology, 2008](https://pubmed.ncbi.nlm.nih.gov/17882270/))
- Topical 5% niacinamide applied twice daily for 12 weeks reduced fine lines and wrinkles, hyperpigmented spots, red blotchiness, and skin sallowness, and improved skin elasticity compared to vehicle control in 50 female white subjects with facial photoaging. ([Dermatologic Surgery, 2005](https://pubmed.ncbi.nlm.nih.gov/16029679/))
- Bakuchiol functions as an anti-aging compound through retinol-like regulation of gene expression, producing significant improvements in lines, wrinkles, pigmentation, elasticity, firmness, and photo-damage after 12 weeks of twice-a-day facial application without usual retinol therapy-associated undesirable effects. ([International Journal of Cosmetic Science, 2014](https://pubmed.ncbi.nlm.nih.gov/24471735/))
- A nature-based bakuchiol-containing cleanser and moisturizer improved visual and tactile smoothness, clarity, radiance, overall appearance, global anti-aging, and skin moisture content by 16% in 60 female subjects with sensitive mild to moderate photodamaged skin over 4 weeks. ([Journal of Drugs in Dermatology, 2020](https://pubmed.ncbi.nlm.nih.gov/33346506/))
- Bakuchiol demonstrated multidirectional antiageing efficacy in in vitro, ex vivo, and in vivo studies, sharing features with retinol while uniquely stimulating extracellular matrix components, epidermal regeneration, and wound healing. ([International Journal of Cosmetic Science, 2022](https://pubmed.ncbi.nlm.nih.gov/35514037/))
- Topical application of 5% vitamin C cream significantly improved global clinical scores, increased skin microrelief density, and induced elastic tissue repair in photoaged skin compared to excipient control in healthy female volunteers. ([Experimental Dermatology, 2003](https://pubmed.ncbi.nlm.nih.gov/12823436/))
- Ascorbic acid 2-glucoside gel significantly reduced gingival melanin pigmentation after 4 weeks compared to placebo in 73 subjects with symmetric pigmentation. ([Journal of Periodontology, 2009](https://pubmed.ncbi.nlm.nih.gov/19186973/))
- Topical application of VC-IP cream twice daily for 8 weeks reduces periorbital wrinkles in female subjects compared to a placebo cream. ([Journal of Cosmetic Dermatology, 2022](https://pubmed.ncbi.nlm.nih.gov/34910367/))

## Why other serums fit oily acne-prone skin better

- A cream combining propolis, tea tree oil, and Aloe vera reduced erythema scars, acne severity index, and total lesion count better than erythromycin cream in sixty patients with mild to moderate acne vulgaris compared to placebo. ([Clinical Pharmacology, 2018](https://pubmed.ncbi.nlm.nih.gov/30588129/))
- Niacinamide and ferulic acid incorporated in a stable multiple emulsion successfully reduced melanin, sebum, and skin erythema while improving skin elasticity and hydration in human skin compared to a placebo. ([BioMed Research International, 2022](https://pubmed.ncbi.nlm.nih.gov/35342760/))

## What reviewers say

Users consistently praise this serum as a gentle yet effective entry-level retinoid that improves skin texture and radiance without the harsh irritation often associated with retinol. The combination of 2% liposomal retinal and black ginseng is frequently highlighted for its ability to smooth fine lines and even out skin tone while maintaining hydration, making it a favorite for those with sensitive or acne-prone skin.

- Liked: Gentle, non-irritating (mostly mentioned)
- Liked: Improves skin texture (often mentioned)
- Liked: Lightweight absorption (often mentioned)
- Liked: Hydrating formula (sometimes noted)
- Disliked: Slow anti-aging results (sometimes noted)
- Disliked: Availability issues (rarely noted)
- Disliked: Bulky packaging (rarely noted)
- Disliked: Initial breakouts (rarely noted)

## How to apply

- Could be used as part of your PM routine. Start 3 times a week and build up to daily use if your skin tolerates it well.
- Apply your serum after cleansing and toning, but before putting on your moisturizer.
- Gently press 2 to 3 drops of the serum into your skin and let it absorb for a minute.
- Apply the serum on clean, dry skin to help manage your blemishes safely.
- Do a patch test before your first use and avoid the delicate eye area.
- Video: https://storage.pora.ai/c879dda8655a61c19d3d8c9ebad6b06d.mp4

## Questions and answers

### How well does K-SECRET Retinal Serum work for oily acne-prone skin?

This serum works moderately well for oily acne-prone skin because niacinamide helps control oil, but retinal and bakuchiol focus more on anti-aging than breakouts. A product of this type needs specific ingredients like niacinamide, propolis, or vitamin C to target excess oil and acne without heavy or pore-clogging components.
Sources: [Clinical, Cosmetic and Investigational Dermatology, 2015](https://pubmed.ncbi.nlm.nih.gov/25914553/), [The British Journal of Dermatology, 2019](https://pubmed.ncbi.nlm.nih.gov/29947134/)

### Which ingredients make this serum a good fit for oily acne-prone skin?

Niacinamide makes this serum a decent fit for oily skin by helping to control oil. Because this product only offers moderate suitability, a treatment for this skin needs ingredients like propolis, vitamin C, and soothing extracts that specifically target breakouts, reduce excess oil, and improve uneven texture while keeping the skin comfortable.

### What does Retinal do for oily acne-prone skin?

Retinal helps clear clogged pores, reduces bumps and pimples, and helps balance oil production for oily, acne-prone skin. It is generally well tolerated when used regularly as part of an acne skincare routine.
Sources: [Clinical and Experimental Dermatology, 1999](https://pubmed.ncbi.nlm.nih.gov/10564319/), [European Review for Medical and Pharmacological Sciences, 2014](https://pubmed.ncbi.nlm.nih.gov/25219827/)

### What does Ginseng Root Extract do for oily acne-prone skin?

Ginseng root extract helps calm oily, acne-prone skin by reducing redness and oxidized sebum while improving breakouts over a period of four weeks. It is also unlikely to clog pores and may help keep the skin looking smooth as it ages.
Sources: [Phytotherapy Research, 2019](https://pubmed.ncbi.nlm.nih.gov/30506753/), [Journal of Ginseng Research, 2017](https://pubmed.ncbi.nlm.nih.gov/28123324/)

### Where does this serum go in a skincare routine for oily acne-prone skin?

This serum goes in the evening routine after cleansing and before moisturizing, though oily acne-prone skin needs a product that targets breakouts and reduces oiliness with specific blemish-fighting ingredients.

### Can I use this serum with AHA, and in what order?

You can use this serum alongside an AHA, but because both can be strong, it is best to use them on alternate nights to keep your skin calm and smooth. Oily acne-prone skin typically needs targeted breakout-fighting ingredients and oil-balancing agents to stay clear.

### How often should I use this serum?

You can use this serum in your evening routine, starting gently once a week and gradually increasing frequency if your skin tolerates it well. Oily acne-prone skin needs a treatment of this type with ingredients that directly target breakouts and reduce excess oil.

### Can this serum clog pores, cause breakouts or purging for oily acne-prone skin?

This serum is unlikely to cause harsh irritation on oily acne-prone skin, though it may trigger mild initial breakouts for some users. Because it offers only moderate suitability with limited oil control, a product for this skin needs targeted blemish-fighting ingredients and oil-balancing components.

### Is this serum fragrance-free and alcohol-free?

Yes, it has no fragrance and no drying alcohol.

## Alternatives for oily acne-prone skin

- [Beauty of Joseon Propolis + Niacinamide Glow Serum](https://lovi.care/skincare/fr/p/beauty-of-joseon/propolis-niacinamide-glow-serum/for/oily-acne-prone-skin) — Superior fit — €18.25 at Amazon
- [Neogen Dermalogy Real Vitamin C Serum](https://lovi.care/skincare/fr/p/neogen-dermalogy/real-vitamin-c-serum/for/oily-acne-prone-skin) — Superior fit — €37.67 at Amazon
- [NEOGEN DERMALOGY REAL VITA C SERUM](https://lovi.care/skincare/fr/p/neogen-dermalogy/real-vita-c-serum/for/oily-acne-prone-skin) — High fit — €37.67 at Amazon

## Pairs well with

- Cleanser: [CeraVe Foaming Facial Cleanser](https://lovi.care/skincare/fr/p/cerave/foaming-facial-cleanser/for/oily-acne-prone-skin) — Superior fit — €11.35 at Amazon
- Hydrating Toner: [Paula's Choice Pore-Reducing Toner](https://lovi.care/skincare/fr/p/paula-s-choice/skin-balancing-pore-reducing-toner/for/oily-acne-prone-skin) — Superior fit — €36.00 at Amazon
- Moisturizer: [COSRX Oil-Free Ultra-Moisturizing Lotion with Birch Sap](https://lovi.care/skincare/fr/p/cosrx/oil-free-ultra-moisturizing-lotion-with-birch-sap/for/oily-acne-prone-skin) — Superior fit — €17.47 at Amazon

## Where to buy

- Amazon.fr: €18.50 (https://www.amazon.fr/dp/B0CP3C7TTJ?tag=lovi-care-web-product06-21&linkCode=osi&th=1&psc=1)
Prices checked 5 Nov 2026.

## Ingredients

Panax Ginseng Root Extract, Water, Glycerin, Dipropylene Glycol, Caprylic Capric Triglyceride, 1,2-Hexanediol, Niacinamide, Butylene Glycol, Methyl Gluceth-20, Polyglycerin-3 Methylglucose Distearate, Hydrogenated Lecithin, Sorbitan Stearate, Ammonium Acryloyldimethyltaurate Vp Copolymer, Macadamia Ternifolia Seed Oil, Carbomer, Tromethamine, Betaine, Tocopherol, Ethylhexylglycerin, Helianthus Annuus Seed Oil Sunflower Seed Oil, Adenosine, Disodium Edta, Cholesterol, Polyglyceryl-10 Oleate, Brassica Campestris Sterols, Phytosteryl Behenyl Octyldodecyl Lauroyl Glutamate, Retinal, Silica, Aluminum Magnesium Hydroxide Stearate, Potassium Cetyl Phosphate, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Arctium Lappa Root Extract, Cnidium Officinale Root Extract, Dioscorea Japonica Root Extract, Paeonia Suffruticosa Root Extract, Rehmannia Chinensis Root Extract, 3-O-Ethyl Ascorbic Acid, Bakuchiol, Sh-Oligopeptide-1, Sh-Oligopeptide-2, Sh-Polypeptide-1
## About the Lovi Fit

Lovi: Unbiased, science-based skincare AI trained on real user outcomes.

Lovi calculates every fit score from the full ingredient list with brand-independent rules its dermatologists and cosmetic chemists build and review, and personalizes every pick with AI trained on the real results of millions of users. Lovi trains its fit score models on a proprietary dataset built from more than 10,000 expert-labeled products and more than 100,000 simulated examples, following an internally consistent methodology presented at Cosmoprof, AMWC, and Skin of Color Update. Levels from best to worst: Superior, High, Average, Low, Caution, Warning.

Behind this fit score: Nadia Kapleva, MS (Co-founder, Medical Director); Alexey Shagraev, PhD (Co-founder, CEO and CTO); Dr. Sofía Perea Pérez, MD, MSc (Medical Board); Aishani Shah, MD (Medical Board); Asya Zubkova, MS (Medical Board); Hanna Kurets, MD (Medical Board, Medical Advisor); Elina Nazarenko, MD (Medical Board); Victoria Derkova, MS (Medical Board).

Page built Nov 8, 2026.

More from Lovi: https://lovi.care/skincare/llms.txt

## This page in other countries

- United States: https://lovi.care/skincare/p/k-secret/seoul-1988-serum/for/oily-acne-prone-skin
- United Kingdom: https://lovi.care/skincare/uk/p/k-secret/seoul-1988-serum/for/oily-acne-prone-skin
- Ireland: https://lovi.care/skincare/ie/p/k-secret/seoul-1988-serum/for/oily-acne-prone-skin
- Germany: https://lovi.care/skincare/de/p/k-secret/seoul-1988-serum/for/oily-acne-prone-skin
- France: https://lovi.care/skincare/fr/p/k-secret/seoul-1988-serum/for/oily-acne-prone-skin (this page)
- Italy: https://lovi.care/skincare/it/p/k-secret/seoul-1988-serum/for/oily-acne-prone-skin
- Netherlands: https://lovi.care/skincare/nl/p/k-secret/seoul-1988-serum/for/oily-acne-prone-skin
- Spain: https://lovi.care/skincare/es/p/k-secret/seoul-1988-serum/for/oily-acne-prone-skin
- Canada: https://lovi.care/skincare/ca/p/k-secret/seoul-1988-serum/for/oily-acne-prone-skin
- Australia: https://lovi.care/skincare/au/p/k-secret/seoul-1988-serum/for/oily-acne-prone-skin
- Singapore: https://lovi.care/skincare/sg/p/k-secret/seoul-1988-serum/for/oily-acne-prone-skin
- Saudi Arabia: https://lovi.care/skincare/sa/p/k-secret/seoul-1988-serum/for/oily-acne-prone-skin
- United Arab Emirates: https://lovi.care/skincare/ae/p/k-secret/seoul-1988-serum/for/oily-acne-prone-skin