# Kiehl's Ultra Pure High-Potency Serum for oily skin

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

Page: https://lovi.care/skincare/sg/p/kiehl-s/ultra-pure-high-potency-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 Singapore.

Brand: [Kiehl's](https://lovi.care/skincare/sg/brands/kiehl-s)
Category: [Serums and treatments](https://lovi.care/skincare/sg/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.

A great choice for oily skin; a few serums fit it even better.

## Why this fit

- Excellent hydration for your oily skin is provided by glycerin and hyaluronic acid, which effectively moisturize without adding excess oil. The absence of harsh ingredients ensures no irritation for your oily skin.
- The high concentrations of glycerin and hyaluronic acid offer general skincare benefits, addressing your need for hydration.
- The product is safe for your skin, with no risks of irritation due to the absence of prohibited or harsh ingredients.

## Fit by skin type

- [Oily skin](https://lovi.care/skincare/sg/p/kiehl-s/ultra-pure-high-potency-serum/for/oily-skin): High (this page)
- [Dry skin](https://lovi.care/skincare/sg/p/kiehl-s/ultra-pure-high-potency-serum/for/dry-skin): High
- [Combination skin](https://lovi.care/skincare/sg/p/kiehl-s/ultra-pure-high-potency-serum/for/combination-skin): High
- [Sensitive skin](https://lovi.care/skincare/sg/p/kiehl-s/ultra-pure-high-potency-serum/for/sensitive-skin): Average
- [Acne-prone skin](https://lovi.care/skincare/sg/p/kiehl-s/ultra-pure-high-potency-serum/for/acne-prone-skin): High
- [Skin with dark spots](https://lovi.care/skincare/sg/p/kiehl-s/ultra-pure-high-potency-serum/for/dark-spots): High
- [Mature skin](https://lovi.care/skincare/sg/p/kiehl-s/ultra-pure-high-potency-serum/for/mature-skin): High
- [Dry sensitive skin](https://lovi.care/skincare/sg/p/kiehl-s/ultra-pure-high-potency-serum/for/dry-sensitive-skin): Average
- [Oily acne-prone skin](https://lovi.care/skincare/sg/p/kiehl-s/ultra-pure-high-potency-serum/for/oily-acne-prone-skin): High

## Key ingredients

Niacinamide, Hyaluronic Acid, Glycerin

## 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 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/))
- Topical application of 0.1% hyaluronic acid formulations of different molecular weights led to significant improvements in skin hydration and elasticity, with low-molecular-weight formulations also significantly reducing wrinkle depth in seventy-six female subjects compared to a vehicle control. ([Journal of Drugs in Dermatology, 2011](https://pubmed.ncbi.nlm.nih.gov/22052267/))
- Topical application of hyaluronic acid in conjunction with free gingival graft significantly reduced donor site postoperative pain until day 7 compared to normal saline, with no significant differences in graft dimensions or patient satisfaction. ([Clinical Oral Investigations, 2022](https://pubmed.ncbi.nlm.nih.gov/34623507/))
- Treatment with a hyaluronic acid-containing mouth rinse or topical gel led to significant lesion reduction, pain relief, and normalization of lesion color in adult patients with minor recurrent aphthous stomatitis, with the gel formulation showing an earlier healing onset at 3 days. ([BMC Oral Health, 2019](https://pubmed.ncbi.nlm.nih.gov/31311529/))
- The emollient V0034CR significantly reduced TEWL compared to vehicle and vehicle plus glycerol, and significantly increased corneometry scores compared to vehicle and vehicle plus petrolatum in healthy volunteers with dry skin, demonstrating combined barrier function improvement from petrolatum and hydration improvement from glycerol. ([Journal of Cosmetic Dermatology, 2020](https://pubmed.ncbi.nlm.nih.gov/31532576/))
- Ten days of treatment with a cream containing 20% glycerin significantly increased skin hydration measured by corneometer values in 17 healthy volunteers compared to a placebo cream, but showed no influence on transepidermal water loss or skin sensitivity to an irritating surfactant. ([International Journal of Cosmetic Science, 2001](https://pubmed.ncbi.nlm.nih.gov/18498456/))
- Niacinamide/glycerin body moisturizers provided better rapid and prolonged improvement of cosmetic xerosis through functional improvement of stratum corneum barrier function compared to no treatment and conventional moisturizers in female subjects. ([Journal of Drugs in Dermatology, 2012](https://pubmed.ncbi.nlm.nih.gov/22206073/))

## What reviewers say

Based on a very large amount of data, this collection of minimalist serums is widely praised for its fast-absorbing, non-sticky textures and efficacy in targeting specific skin concerns like dryness, excess oil, and uneven texture. The Hyaluronic Acid version is lauded for immediate plumping, the Niacinamide serum is a favorite for controlling shine without irritation, and the Glycolic Acid variant is effective for smoothing skin, though it requires caution for sensitive types.

- Liked: Fast-absorbing texture (mostly mentioned)
- Liked: Effective oil control (often mentioned)
- Liked: Gentle minimalist formula (often mentioned)
- Liked: Immediate hydration (often mentioned)
- Disliked: High price point (often mentioned)
- Liked: Visible skin smoothing (sometimes noted)
- Disliked: Lack of dramatic results (sometimes noted)
- Disliked: Packaging concerns (rarely noted)
- Disliked: Potential irritation (rarely noted)
- Disliked: Texture preference (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

### What makes Kiehl's Ultra Pure High-Potency Serum a great fit for oily skin?

Kiehl's Ultra Pure High-Potency Serum is a great fit for oily skin because glycerin and hyaluronic acid provide excellent hydration without adding excess oil. This formula is also gentle and safe, with no harsh ingredients to cause irritation.
Sources: [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/)

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

Glycerin and hyaluronic acid make this serum a great fit because they hydrate oily skin effectively without adding extra oil. The formula is also free of harsh ingredients, which helps keep your skin calm and safe from irritation.
Sources: [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/)

### What does Niacinamide do for oily skin?

Niacinamide helps balance oily skin by significantly reducing excess oil production and shine. It is well tolerated and may improve skin texture without clogging pores.
Sources: [Journal of Cosmetic and Laser Therapy, 2006](https://pubmed.ncbi.nlm.nih.gov/16766489/), [Antioxidants, 2021](https://pubmed.ncbi.nlm.nih.gov/34439563/)

### What does Hyaluronic Acid do for oily skin?

Hyaluronic acid helps oily skin by reducing extra oil and sebum production without causing irritation. Clinical studies show it successfully balances oil levels while keeping the skin comfortable.
Sources: [The Journal of Investigative Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28163068/)

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

This serum goes in your evening routine after cleansing and toning, and before moisturizing. Putting treatments in the evening keeps things simple and helps avoid any extra safety concerns around sun exposure.

### Can I use it with retinol, and in what order?

You can use this treatment alongside retinol by applying it before your retinol product to help keep your oily skin hydrated without adding excess shine. Using a hydrating routine helps reduce the irritation and dryness that can sometimes happen when you use retinol.
Sources: [Journal of Cosmetic Dermatology, 2024](https://pubmed.ncbi.nlm.nih.gov/38102855/), [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/)

### How often should I use this serum?

You can use this treatment in the evening as part of your routine. It is a great fit for your oily skin because it provides excellent hydration without adding excess oil, and it is very unlikely to cause irritation.
Sources: [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/)

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

This serum is unlikely to clog pores or cause breakouts on oily skin because it uses glycerin and hyaluronic acid to moisturize without adding excess oil. Its gentle formula is very safe and leaves out harsh ingredients, so it is unlikely to cause irritation.
Sources: [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/)

## Alternatives for oily skin

- [NEOGEN DERMALOGY REAL VITA C SERUM](https://lovi.care/skincare/sg/p/neogen-dermalogy/real-vita-c-serum/for/oily-skin) — High fit — S$50.41 at Amazon
- [Neogen Dermalogy Real Vitamin C Serum](https://lovi.care/skincare/sg/p/neogen-dermalogy/real-vitamin-c-serum/for/oily-skin) — High fit — S$50.41 at Amazon
- [Skin1004 Probio-Cica Intensive Ampoule](https://lovi.care/skincare/sg/p/skin1004/probio-cica-intensive-ampoule/for/oily-skin) — High fit — S$28.55 at Amazon

## Pairs well with

- Cleanser: [CeraVe Foaming Facial Cleanser](https://lovi.care/skincare/sg/p/cerave/foaming-facial-cleanser/for/oily-skin) — Superior fit — S$30.40 at Amazon
- Hydrating Toner: [TROIAREUKE H+Cocktail Purifying Ampoule Toner](https://lovi.care/skincare/sg/p/troiareuke/h-cocktail-purifying-ampoule-toner/for/oily-skin) — Superior fit — S$168.51 at Amazon
- Moisturizer: [SKIN1004 Centella Cream](https://lovi.care/skincare/sg/p/skin1004/centella-cream/for/oily-skin) — Superior fit — S$33.87 at Amazon

## Where to buy

No store in Singapore has a checked price for this product, so the page shows none.

## Ingredients

Water, Glycerin, Hyaluronic Acid, Phenoxyethanol, Chlorphenesin, Tetrasodium Glutamate Diacetate, Citric Acid
## 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/kiehl-s/ultra-pure-high-potency-serum/for/oily-skin
- United Kingdom: https://lovi.care/skincare/uk/p/kiehl-s/ultra-pure-high-potency-serum/for/oily-skin
- Ireland: https://lovi.care/skincare/ie/p/kiehl-s/ultra-pure-high-potency-serum/for/oily-skin
- Germany: https://lovi.care/skincare/de/p/kiehl-s/ultra-pure-high-potency-serum/for/oily-skin
- France: https://lovi.care/skincare/fr/p/kiehl-s/ultra-pure-high-potency-serum/for/oily-skin
- Italy: https://lovi.care/skincare/it/p/kiehl-s/ultra-pure-high-potency-serum/for/oily-skin
- Netherlands: https://lovi.care/skincare/nl/p/kiehl-s/ultra-pure-high-potency-serum/for/oily-skin
- Spain: https://lovi.care/skincare/es/p/kiehl-s/ultra-pure-high-potency-serum/for/oily-skin
- Canada: https://lovi.care/skincare/ca/p/kiehl-s/ultra-pure-high-potency-serum/for/oily-skin
- Australia: https://lovi.care/skincare/au/p/kiehl-s/ultra-pure-high-potency-serum/for/oily-skin
- Singapore: https://lovi.care/skincare/sg/p/kiehl-s/ultra-pure-high-potency-serum/for/oily-skin (this page)
- Saudi Arabia: https://lovi.care/skincare/sa/p/kiehl-s/ultra-pure-high-potency-serum/for/oily-skin
- United Arab Emirates: https://lovi.care/skincare/ae/p/kiehl-s/ultra-pure-high-potency-serum/for/oily-skin