# Sunday Riley A+ High-Dose Retinoid Serum for combination skin

**Lovi Fit: Average fit for combination skin.**
Combination Skin Fit: Average · Effectiveness: Average · Safety: High.

Page: https://lovi.care/skincare/de/p/sunday-riley/a-high-dose-retinoid-serum/for/combination-skin

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

Brand: [Sunday Riley](https://lovi.care/skincare/de/brands/sunday-riley)
Category: [Serums and treatments](https://lovi.care/skincare/de/best/serums)

This fit is calculated for the concerns frequently associated with combination skin: an oily T-zone, enlarged pores, and dry cheeks. For scores based on a full skin profile (12D face scan, goals, preferences), use the Lovi app.

Works for combination skin; other serums fit it better.

## Why this fit

- Offers moderate treatment for fine lines and wrinkles due to the presence of hydroxypinacolone retinoate and retinol, which promote cell turnover and regulate sebum production, providing general skincare benefits for your combination skin. While these ingredients offer retinoid benefits, the formula lacks sufficient seboregulating ingredients for optimal oil control on your oily areas.
- The inclusion of bisabolol and honey extract provides soothing effects, contributing to the overall comfort and safety profile for your combination skin.
- The product is safe for your combination 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/de/p/sunday-riley/a-high-dose-retinoid-serum/for/oily-skin): Average
- [Dry skin](https://lovi.care/skincare/de/p/sunday-riley/a-high-dose-retinoid-serum/for/dry-skin): Average
- [Combination skin](https://lovi.care/skincare/de/p/sunday-riley/a-high-dose-retinoid-serum/for/combination-skin): Average (this page)
- [Sensitive skin](https://lovi.care/skincare/de/p/sunday-riley/a-high-dose-retinoid-serum/for/sensitive-skin): Average
- [Acne-prone skin](https://lovi.care/skincare/de/p/sunday-riley/a-high-dose-retinoid-serum/for/acne-prone-skin): Average
- [Skin with dark spots](https://lovi.care/skincare/de/p/sunday-riley/a-high-dose-retinoid-serum/for/dark-spots): High
- [Mature skin](https://lovi.care/skincare/de/p/sunday-riley/a-high-dose-retinoid-serum/for/mature-skin): Average
- [Dry sensitive skin](https://lovi.care/skincare/de/p/sunday-riley/a-high-dose-retinoid-serum/for/dry-sensitive-skin): Average
- [Oily acne-prone skin](https://lovi.care/skincare/de/p/sunday-riley/a-high-dose-retinoid-serum/for/oily-acne-prone-skin): High

## Key ingredients

Retinoid Blend, Ubiquinone, Honey Extract, Hydroxypinacolone Retinoate, Sodium Hyaluronate Crosspolymer

## What the research says

- Topical 0.4% retinol significantly increased epidermal thickness, dermal vascularity, and extracellular matrix production by stimulating keratinocyte proliferation, endothelial cell proliferation, and fibroblast activation in naturally aged human skin compared to vehicle. ([International Journal of Cosmetic Science, 2017](https://pubmed.ncbi.nlm.nih.gov/27261203/))
- Hydroxypinacolone retinoate and retinyl propionate at a 5:9 weight ratio synergistically enhanced antiaging gene expressions in vitro and improved skin wrinkles, smoothness, transepidermal water loss, and elasticity in 42 Chinese urban women over an 8-week period without adverse reactions compared to retinol. ([Journal of Cosmetic Dermatology, 2023](https://pubmed.ncbi.nlm.nih.gov/36762391/))
- Topical retinoids improve global assessment scores and reduce lesion counts compared to vehicle in patients with acne vulgaris, with adapalene demonstrating a superior tolerability profile and benzoyl peroxide combination optimizing results. ([American Journal of Clinical Dermatology, 2019](https://pubmed.ncbi.nlm.nih.gov/30674002/))
- Topical application of all-trans-retinol induced epidermal thickening and increased retinoid binding protein expression similar to all-trans-retinoic acid in normal human skin, but without causing significant erythema or measurable retinoic acid levels. ([The Journal of Investigative Dermatology, 1995](https://pubmed.ncbi.nlm.nih.gov/7561157/))
- Trifarotene cream 0.005% resulted in a significantly greater reduction in total atrophic acne scar count compared with vehicle at Week 24 (55.2% vs 29.9%) in patients with atrophic acne scarring. ([Dermatology and Therapy, 2025](https://pubmed.ncbi.nlm.nih.gov/39984798/))
- Topical application of CoQ10 improves mitochondrial function in aging skin in vivo, combating cellular signs of aging caused by an age-dependent shift to a functionally anaerobic energy metabolism. ([BioFactors, 2008](https://pubmed.ncbi.nlm.nih.gov/19096122/))
- Encapsulating coenzyme Q10 in lipid nanoparticles for topical use improves skin compatibility, protects against degradation, increases skin penetration, and provides controlled release to counteract aging effects. ([Colloids and Surfaces. B, Biointerfaces, 2023](https://pubmed.ncbi.nlm.nih.gov/37574615/))
- Review of topical administration of carotenoids and coenzyme Q10 loaded in lipid nanoparticles highlights their improved bioavailability, chemical stability, skin absorption, and photoprotective effects. ([Antioxidants, 2021](https://pubmed.ncbi.nlm.nih.gov/34206935/))
- Honey-based dressings reduced mean healing duration, length of hospital stay, and VAS pain scores compared with povidone iodine-based dressings in 1236 participants. ([Journal of Wound Care, 2021](https://pubmed.ncbi.nlm.nih.gov/33856925/))
- Topical honey application improved the mean duration of attacks and pain, occurrence of crusting, and healing time compared to acyclovir cream in 16 adult patients with recurrent labial and genital herpes lesions. ([Medical Science Monitor, 2004](https://pubmed.ncbi.nlm.nih.gov/15278008/))
- A topical serum containing hydroxypinacolone retinoate and peptides used twice daily for 16 weeks achieved parity or statistically significantly better improvement in facial aging parameters compared to a single fractional CO2 laser treatment in women with moderate global photodamage. ([Journal of Cosmetic Dermatology, 2025](https://pubmed.ncbi.nlm.nih.gov/39394831/))
- Combined probiotic supplementation and topical azelaic acid with hydroxypinacolone retinoate reduced non-inflammatory lesions from 11.5 to 7.3 and decreased microscopic acne features measured by reflectance confocal microscopy and dynamic optical coherence tomography in 20 patients over 12 weeks. ([Journal of Clinical Medicine, 2023](https://pubmed.ncbi.nlm.nih.gov/37510902/))
- A new topical gel formulation reduced total acne lesions by 80% and GAGS scores by 78% after 8 weeks in 22 female patients with mild facial acne without impairing skin barrier function or causing side effects. ([Giornale Italiano Di Dermatologia E Venereologia, 2020](https://pubmed.ncbi.nlm.nih.gov/32869963/))
- 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/))

## Why other serums fit combination skin better

- 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/))
- 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/))

## What reviewers say

Users frequently praise this serum for its ability to deliver retinoid benefits like smoothed texture and reduced fine lines with minimal irritation, making it suitable for sensitive skin or retinoid beginners. The formula includes soothing botanicals that help mitigate dryness and redness, improving overall skin clarity and radiance.

- Liked: Gentle, non-irritating (mostly mentioned)
- Liked: Smoother texture (often mentioned)
- Disliked: Expensive product (often mentioned)
- Liked: Anti-aging results (sometimes noted)
- Liked: Moisturizing formula (sometimes noted)
- Disliked: Unpleasant scent (sometimes noted)
- Disliked: Initial breakouts (rarely noted)
- Disliked: Strength claims (rarely noted)

## How to apply

- Use your serum as part of your PM routine. Start using it 3 times a week and move to daily use if your skin likes it.
- Apply the serum after cleansing and toner, and right before your moisturizer.
- Gently press 2-3 drops of the serum into your skin and wait a minute ⏳for it to soak in.
- Apply the serum on clean and dry skin since your skin is not sensitive.
- Always do a patch test before using the serum for the first time, and avoid the eye area .
- Video: https://storage.pora.ai/c879dda8655a61c19d3d8c9ebad6b06d.mp4

## Questions and answers

### How well does Sunday Riley A+ High-Dose Retinoid Serum work for combination skin?

Sunday Riley A+ High-Dose Retinoid Serum works moderately well for combination skin, providing helpful smoothing effects while lacking enough oil-controlling ingredients for the oily areas. To work best for this skin type, a treatment of this kind needs targeted ingredients like niacinamide, propolis, and zinc PCA to balance oiliness and provide optimal hydration.
Sources: [Journal of Cosmetic Dermatology, 2023](https://pubmed.ncbi.nlm.nih.gov/36762391/)

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

Hydroxypinacolone retinoate and retinol make this serum a good fit by promoting cell turnover and helping smooth fine lines, while bisabolol and honey extract calm the skin. To work best for combination skin, a product of this type needs extra oil-control ingredients like niacinamide and zinc PCA to manage shine on oily areas while keeping the skin balanced.

### What does Retinoid do for combination skin?

Retinoid helps combination skin by smoothing texture, evening out tone, and keeping pores clear. This type of ingredient works best for combination skin when it also includes gentle hydrators like hyaluronic acid or niacinamide to balance dry areas while managing oil.
Sources: [Journal of Drugs in Dermatology, 2016](https://pubmed.ncbi.nlm.nih.gov/27391637/), [Journal of Drugs in Dermatology, 2023](https://pubmed.ncbi.nlm.nih.gov/38051835/)

### What does Coenzyme Q10 do for combination skin?

Coenzyme Q10 helps energize tired skin cells, reduces free radicals, and supports a smooth look for combination skin by providing antioxidant protection. It is unlikely to clog pores and may help fight early signs of aging across both dry and oily areas.
Sources: [BioFactors, 2015](https://pubmed.ncbi.nlm.nih.gov/26648450/), [The Journal of Clinical and Aesthetic Dermatology, 2024](https://pubmed.ncbi.nlm.nih.gov/39148958/)

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

This treatment serum goes in the evening routine after cleansing and toning, followed by your moisturizer. Putting treatments in the evening helps with simplicity and extra safety around sun exposure.

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

This serum works for combination skin, though it lacks enough oil-controlling ingredients to manage shine on your oily areas effectively. To combine it with vitamin C, apply your vitamin C in the morning and reserve this treatment for your evening routine to help prevent irritation.

### How often should I use this serum?

This serum works well in your evening routine, and a product of this type needs extra oil-controlling ingredients to properly manage your combination skin.

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

This serum is unlikely to cause irritation on combination skin, though initial breakouts may happen as your skin adjusts. Combination skin needs products that balance oil in oily areas while keeping dry areas hydrated.
Sources: [Journal of Cosmetic Dermatology, 2023](https://pubmed.ncbi.nlm.nih.gov/36762391/)

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

It has no fragrance and contains drying alcohol (alcohol).

## Alternatives for combination skin

- [Beauty of Joseon Propolis + Niacinamide Glow Serum](https://lovi.care/skincare/de/p/beauty-of-joseon/propolis-niacinamide-glow-serum/for/combination-skin) — Superior fit — €9.99 at Amazon
- [Neogen Dermalogy Real Niacinamide 15% Firming Serum](https://lovi.care/skincare/de/p/neogen-dermalogy/real-niacinamide-15-firming-serum/for/combination-skin) — Superior fit — €35.29 at Amazon
- [Augustinus Bader The Serum](https://lovi.care/skincare/de/p/augustinus-bader/the-serum/for/combination-skin) — Superior fit — €333.00 at Amazon

## Pairs well with

- Cleanser: [Fresh Soy Face Cleanser](https://lovi.care/skincare/de/p/fresh/soy-face-cleanser/for/combination-skin) — Superior fit — €39.99 at Amazon
- Hydrating Toner: [Paula's Choice Pore-Reducing Toner](https://lovi.care/skincare/de/p/paula-s-choice/skin-balancing-pore-reducing-toner/for/combination-skin) — Superior fit — €36.00 at Amazon
- Moisturizer: [Some By Mi Yuja Niacin Brightening Moisture Gel Cream](https://lovi.care/skincare/de/p/some-by-mi/yuja-niacin-brightening-moisture-gel-cream/for/combination-skin) — Superior fit — €13.67 at Amazon

## Where to buy

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

## Ingredients

Water Eau Agua, Propanediol, Dimethyl Isosorbide, Triheptanoin, Dimethicone, Glycerin, Pentylene Glycol, Hexyldecanol, Disiloxane, Cetyl Peg Ppg-10 1 Dimethicone, Diheptyl Succinate, Propylene Carbonate, Hydroxypinacolone Retinoate, Ppg-24-Glycereth-24, Phenyl Trimethicone, Retinol, Ubiquinone, Honey Extract, Sodium Hyaluronate Crosspolymer, Algae Extract, Zingiber Officinale Extract, Opuntia Ficus-Indica Fruit Extract, Bisabolol, Butyrospermum Parkii Butter Shea Butter, Yeast Extract, Lecithin, Sodium Acrylates Copolymer, Hydrogenated Polyisobutene, 1,2-Hexanediol, 4-T-Butylcyclohexanol, Polyglyceryl-10 Stearate, Caprylyl Glycol, Helianthus Annuus Seed Oil Sunflower Seed Oil, Sorbitol, Cetylhydroxyproline Palmitamide, Polysilicone-11, Benzoic Acid, Dehydroacetic Acid, Sodium Phytate, Glyceryl Polyacrylate, Polysorbate, Hydroxyphenyl Propamidobenzoic Acid, Stearic Acid, Brassica Campestris Sterols, Pvp, Capryloyl Glycerin Sebacic Acid Copolymer, Sodium Benzoate, Alcohol, Potassium Phosphate, Decyl Glucoside, Phenoxyethanol, Hexylene Glycol, Potassium Sorbate, Tocopherol
## 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/sunday-riley/a-high-dose-retinoid-serum/for/combination-skin
- United Kingdom: https://lovi.care/skincare/uk/p/sunday-riley/a-high-dose-retinoid-serum/for/combination-skin
- Ireland: https://lovi.care/skincare/ie/p/sunday-riley/a-high-dose-retinoid-serum/for/combination-skin
- Germany: https://lovi.care/skincare/de/p/sunday-riley/a-high-dose-retinoid-serum/for/combination-skin (this page)
- France: https://lovi.care/skincare/fr/p/sunday-riley/a-high-dose-retinoid-serum/for/combination-skin
- Italy: https://lovi.care/skincare/it/p/sunday-riley/a-high-dose-retinoid-serum/for/combination-skin
- Netherlands: https://lovi.care/skincare/nl/p/sunday-riley/a-high-dose-retinoid-serum/for/combination-skin
- Spain: https://lovi.care/skincare/es/p/sunday-riley/a-high-dose-retinoid-serum/for/combination-skin
- Canada: https://lovi.care/skincare/ca/p/sunday-riley/a-high-dose-retinoid-serum/for/combination-skin
- Australia: https://lovi.care/skincare/au/p/sunday-riley/a-high-dose-retinoid-serum/for/combination-skin
- Singapore: https://lovi.care/skincare/sg/p/sunday-riley/a-high-dose-retinoid-serum/for/combination-skin
- Saudi Arabia: https://lovi.care/skincare/sa/p/sunday-riley/a-high-dose-retinoid-serum/for/combination-skin
- United Arab Emirates: https://lovi.care/skincare/ae/p/sunday-riley/a-high-dose-retinoid-serum/for/combination-skin