# K-SECRET SEOUL 1988 Serum for oily skin

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

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

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

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

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

Works for oily skin; other serums fit it better.

## Why this fit

- Offers moderate suitability for your oily skin, as niacinamide and glycerin provide some oil control and hydration, but it lacks potent ingredients specifically targeting excessive shine.
- The inclusion of Retinal and Bakuchiol offers excellent anti-aging benefits, which are beneficial for overall skin health.
- The product is safe for your skin, with soothing ingredients like Panax Ginseng Root Extract and Tocopherol ensuring no irritation.

## Fit by skin type

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

## Key ingredients

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

## What the research says

- A single application of a moisturizing fluid containing hyaluronic acid 1%, glycerin 5%, and Centella asiatica stem cells extract significantly increased skin hydration by 29% and reduced transepidermal water loss at 24 hours compared to baseline and an untreated control site in twenty healthy women. ([Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/))
- 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/))
- 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/))
- 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/))
- 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/))
- 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 skin better

- A panthenol-enriched mask improved skin hydration, regulated sebum, and reduced redness and TEWL across dry sensitive, oily sensitive, and oily acne skin subgroups with excellent tolerance and no adverse reactions. ([Journal of Cosmetic Dermatology, 2024](https://pubmed.ncbi.nlm.nih.gov/38366684/))
- 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

- Use this serum in your PM routine. Start by applying it 3 times a week and build up to daily use if your skin tolerates it well.
- Apply the serum after cleansing and toning, but right before your moisturizer for the best results.
- Gently press 2-3 drops of the serum into your skin. Let it absorb ⏱ for a minute before applying the next product.
- Apply the serum on clean and dry skin since your skin is not sensitive and you want to target oily shine. This helps control excess oil throughout the night.
- Avoid the delicate eye area and do a patch test before using the serum for the very first time.
- Video: https://storage.pora.ai/c879dda8655a61c19d3d8c9ebad6b06d.mp4

## Questions and answers

### How well does K-SECRET SEOUL 1988 work for oily skin?

This serum offers moderate suitability for oily skin, as niacinamide and glycerin provide some oil control and hydration, but it lacks potent ingredients specifically targeting excessive shine. A product of this type needs effective ingredients like niacinamide and zinc pca to control sebum production and manage oily shine, alongside soothing extracts and lightweight humectants that keep the skin comfortable without clogging pores.

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

Niacinamide and glycerin make this serum a good fit for oily skin by providing some oil control and hydration, though it lacks potent ingredients specifically targeting excessive shine. Oily skin needs ingredients that control sebum production, manage oily shine, and address enlarged pores, along with antioxidants and soothing extracts like niacinamide, zinc PCA, and ferulic acid.
Sources: [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/)

### What does Retinal do for oily skin?

Retinal helps oily skin by reducing excess oil and clearing clogged pores when used daily. This ingredient is well-suited for managing breakouts while keeping skin smooth and calm.
Sources: [Journal of Cosmetic Dermatology, 2021](https://pubmed.ncbi.nlm.nih.gov/34587353/)

### What does Ginseng Root Extract do for oily skin?

Ginseng Root Extract helps calm oily skin and protects it from daily stress and UV damage. This ingredient also helps reduce inflammation and keeps the skin balanced, though an oily routine also needs lightweight, oil-free hydration and gentle cleansing to stay clear.
Sources: [Scientific Reports, 2016](https://pubmed.ncbi.nlm.nih.gov/27982079/), [Frontiers in Bioscience, 2023](https://pubmed.ncbi.nlm.nih.gov/38179774/)

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

This serum goes in the evening routine after cleansing and before moisturizing. Oily skin works well with a product of this type when it includes potent ingredients that specifically target excessive shine.

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

It is best to use this serum and AHAs on alternate nights rather than together to avoid potential irritation from combining powerful active ingredients. If you do use them in the same routine, apply your AHA first, let it absorb fully, and then apply this treatment.

### How often should I use this serum?

Apply this serum in the evening. Oily skin benefits from a product of this type that also includes potent ingredients to control excessive shine.

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

This serum is unlikely to cause clogged pores or breakouts, though initial breakouts may happen in rare cases. Soothing ingredients like Panax Ginseng Root Extract help keep irritation low.

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

Yes, it has no fragrance and no drying alcohol.

## Alternatives for oily skin

- [Beauty of Joseon Propolis + Niacinamide Glow Serum](https://lovi.care/skincare/ie/p/beauty-of-joseon/propolis-niacinamide-glow-serum/for/oily-skin) — Superior fit — €14.94 at Amazon
- [Neogen Dermalogy Real Niacinamide 15% Firming Serum](https://lovi.care/skincare/ie/p/neogen-dermalogy/real-niacinamide-15-firming-serum/for/oily-skin) — Superior fit — €52.57 at Amazon
- [SkinCeuticals C E Ferulic](https://lovi.care/skincare/ie/p/skinceuticals/c-e-ferulic/for/oily-skin) — High fit — €185.00 at Amazon

## Pairs well with

- Cleanser: [CeraVe Foaming Facial Cleanser](https://lovi.care/skincare/ie/p/cerave/foaming-facial-cleanser/for/oily-skin) — Superior fit — €21.45 at Amazon
- Hydrating Toner: [SOME BY MI Snail Truecica Miracle Repair Toner](https://lovi.care/skincare/ie/p/some-by-mi/snail-truecica-miracle-repair-toner/for/oily-skin) — Superior fit — €19.99 at Amazon
- Moisturizer: [COSRX Oil-Free Ultra-Moisturizing Lotion with Birch Sap](https://lovi.care/skincare/ie/p/cosrx/oil-free-ultra-moisturizing-lotion-with-birch-sap/for/oily-skin) — Superior fit — €16.50 at Amazon

## Where to buy

- Amazon.ie: €18.50 (https://www.amazon.ie/dp/B0CP3C7TTJ?tag=lovi-care-web-product02-21&linkCode=osi&th=1&psc=1)
Prices checked 6 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-skin
- United Kingdom: https://lovi.care/skincare/uk/p/k-secret/seoul-1988-serum/for/oily-skin
- Ireland: https://lovi.care/skincare/ie/p/k-secret/seoul-1988-serum/for/oily-skin (this page)
- Germany: https://lovi.care/skincare/de/p/k-secret/seoul-1988-serum/for/oily-skin
- France: https://lovi.care/skincare/fr/p/k-secret/seoul-1988-serum/for/oily-skin
- Italy: https://lovi.care/skincare/it/p/k-secret/seoul-1988-serum/for/oily-skin
- Netherlands: https://lovi.care/skincare/nl/p/k-secret/seoul-1988-serum/for/oily-skin
- Spain: https://lovi.care/skincare/es/p/k-secret/seoul-1988-serum/for/oily-skin
- Canada: https://lovi.care/skincare/ca/p/k-secret/seoul-1988-serum/for/oily-skin
- Australia: https://lovi.care/skincare/au/p/k-secret/seoul-1988-serum/for/oily-skin
- Singapore: https://lovi.care/skincare/sg/p/k-secret/seoul-1988-serum/for/oily-skin
- Saudi Arabia: https://lovi.care/skincare/sa/p/k-secret/seoul-1988-serum/for/oily-skin
- United Arab Emirates: https://lovi.care/skincare/ae/p/k-secret/seoul-1988-serum/for/oily-skin