# Youth to the People 15% Vitamin C + Clean Caffeine Energy Serum for combination skin

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

Page: https://lovi.care/skincare/sa/p/youth-to-the-people/15-vitamin-c-clean-caffeine-energy-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 Saudi Arabia.

Brand: [Youth to the People](https://lovi.care/skincare/sa/brands/youth-to-the-people)
Category: [Serums and treatments](https://lovi.care/skincare/sa/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

- This serum offers moderate brightening and antioxidant benefits for your combination skin, with multiple forms of Vitamin C like 3-O-Ethyl Ascorbic Acid and Tetrahexyldecyl Ascorbate working to even skin tone and protect against environmental damage. Glycerin and Sodium Hyaluronate provide essential hydration, supporting overall skin health.
- While caffeine and squalane offer soothing properties and help maintain skin barrier function, the formula does not specifically target your primary concern of oily shine.
- The product has a good safety profile, with no harsh ingredients and the inclusion of soothing agents that minimize irritation risk for combination skin.

## Fit by skin type

- [Oily skin](https://lovi.care/skincare/sa/p/youth-to-the-people/15-vitamin-c-clean-caffeine-energy-serum/for/oily-skin): Average
- [Dry skin](https://lovi.care/skincare/sa/p/youth-to-the-people/15-vitamin-c-clean-caffeine-energy-serum/for/dry-skin): Average
- [Combination skin](https://lovi.care/skincare/sa/p/youth-to-the-people/15-vitamin-c-clean-caffeine-energy-serum/for/combination-skin): Average (this page)
- [Sensitive skin](https://lovi.care/skincare/sa/p/youth-to-the-people/15-vitamin-c-clean-caffeine-energy-serum/for/sensitive-skin): Average
- [Acne-prone skin](https://lovi.care/skincare/sa/p/youth-to-the-people/15-vitamin-c-clean-caffeine-energy-serum/for/acne-prone-skin): High
- [Skin with dark spots](https://lovi.care/skincare/sa/p/youth-to-the-people/15-vitamin-c-clean-caffeine-energy-serum/for/dark-spots): High
- [Mature skin](https://lovi.care/skincare/sa/p/youth-to-the-people/15-vitamin-c-clean-caffeine-energy-serum/for/mature-skin): High
- [Dry sensitive skin](https://lovi.care/skincare/sa/p/youth-to-the-people/15-vitamin-c-clean-caffeine-energy-serum/for/dry-sensitive-skin): Average
- [Oily acne-prone skin](https://lovi.care/skincare/sa/p/youth-to-the-people/15-vitamin-c-clean-caffeine-energy-serum/for/oily-acne-prone-skin): Average

## Key ingredients

Ascorbic Acid, Clean Caffeine, Squalane, Magnesium Ascorbyl Phosphate, 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/))
- A topical serum containing vitamin C, vitamin E, and raspberry leaf cell culture extract improved skin color, elasticity, radiance, smoothness, scaliness, and wrinkles compared to the untreated contralateral side in fifty female volunteers. ([Journal of Cosmetic Dermatology, 2020](https://pubmed.ncbi.nlm.nih.gov/31975502/))
- Application of squalene/phosphotungstate calcium nanowires (Sql/PWC) oleogel on UVB-irradiated skin decreased epidermal thickness, increased dermal thickness, and promoted the expression of elastin, collagen, and skin barrier markers through antioxidant and anti-inflammatory activities. ([Journal of Nanobiotechnology, 2025](https://pubmed.ncbi.nlm.nih.gov/40001122/))
- 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/))
- A topical cosmetic slimming product containing tetrahydroxypropyl ethylenediamine, caffeine, carnitine, forskolin and retinol significantly reduced body circumferences and improved skin aspect compared with placebo in 78 women over 12 weeks. ([International Journal of Cosmetic Science, 2011](https://pubmed.ncbi.nlm.nih.gov/21564138/))
- Topical sunscreen formulations containing caffeine combined with UV filters increased in vivo anti-UVB protection by approximately 25% and showed higher SPF values compared to caffeine-free sunscreen, while being well tolerated by the skin of healthy subjects. ([Frontiers in Physiology, 2019](https://pubmed.ncbi.nlm.nih.gov/31130869/))
- Caffeine gel combined with choline geranate showed high skin permeation capacity and superior clinical results in cellulite treatment compared to caffeine gel without ionic liquid. ([AAPS PharmSciTech, 2021](https://pubmed.ncbi.nlm.nih.gov/33796955/))
- Squalane at 0.005-0.015% counteracts UVA-induced oxidative stress, inflammation, and collagen metabolism inhibition while stimulating fibroblast migration in human dermal fibroblasts. ([Molecules, 2025](https://pubmed.ncbi.nlm.nih.gov/40363772/))
- Plant-derived squalane protected human dermal fibroblasts against UVA-induced damage by counteracting ROS formation, suppressing apoptosis-related proteins p53, caspase-3, caspase-9, and PARP, and restoring the pro-survival p-Akt/mTOR pathway. ([Antioxidants, 2025](https://pubmed.ncbi.nlm.nih.gov/40722956/))
- 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/))

## 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

Based on a very large amount of data, users with dull, tired, or sensitive skin frequently praise this serum for its ability to visibly brighten the complexion and reduce morning puffiness without causing irritation. While many report a "healthy glow" and improved skin tone, results regarding hyperpigmentation vary, and the product is often noted for its unique, lightweight texture that layers well under makeup.

- Liked: Visibly brightens skin (mostly mentioned)
- Liked: Gentle formula (often mentioned)
- Liked: Lightweight texture (often mentioned)
- Disliked: High price point (often mentioned)
- Liked: Reduces puffiness (sometimes noted)
- Disliked: Strong ginger scent (sometimes noted)
- Disliked: Lack of results (rarely noted)
- Disliked: Sticky finish (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 Youth to the People 15% Vitamin C + Clean Caffeine Energy Serum work for combination skin?

This serum works moderately well for your combination skin, offering helpful brightening and hydration, though it does not target oily shine. A product of this type needs ingredients like niacinamide and zinc to properly manage oil and balance combination skin.
Sources: [Journal of Cosmetic Dermatology, 2020](https://pubmed.ncbi.nlm.nih.gov/31975502/), [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/)

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

This serum works for combination skin because glycerin and sodium hyaluronate provide essential hydration while multiple forms of Vitamin C brighten the skin and protect against environmental damage. Additionally, caffeine and squalane help soothe the skin and maintain the skin barrier. A product of this type needs ingredients like niacinamide, zinc PCA, and propolis to properly manage oily shine and regulate oiliness.
Sources: [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/), [Journal of Cosmetic Dermatology, 2020](https://pubmed.ncbi.nlm.nih.gov/31975502/)

### What does Vitamin C do for combination skin?

Vitamin C helps brighten dull areas and smooth out uneven texture on combination skin while protecting against daily environmental stress. It may also help keep pores clear and skin firm by supporting collagen production, though drier spots may need an added moisturizer to stay comfortable.
Sources: [Journal of Cosmetic Dermatology, 2020](https://pubmed.ncbi.nlm.nih.gov/31975502/), [Journal of Cosmetic Dermatology, 2023](https://pubmed.ncbi.nlm.nih.gov/37128827/)

### What does Caffeine do for combination skin?

For combination skin, topical caffeine helps protect skin cells against sun damage with antioxidant properties and increases microcirculation. It is unlikely to cause irritation and acts as an active compound.
Sources: [Skin Pharmacology and Physiology, 2013](https://pubmed.ncbi.nlm.nih.gov/23075568/)

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

This treatment goes in the evening routine after cleansing and before moisturizing, though some serums may also be used in the morning. Combination skin also needs ingredients that target oily shine.

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

You can use this serum with retinol by applying the vitamin C first and the retinol later, or by using vitamin C in the morning and retinol at night to avoid irritation. This product is well tolerated and unlikely to cause harsh reactions, but combination skin also needs oil-controlling ingredients to properly manage shine.
Sources: [Journal of Cosmetic Dermatology, 2020](https://pubmed.ncbi.nlm.nih.gov/31975502/)

### How often should I use this serum?

This treatment works best in the evening once a day for simplicity and extra safety around sun exposure, though it may also be used in the morning or twice daily if your skin tolerates it well. To work better for combination skin, this type of product needs ingredients that specifically target oily shine.
Sources: [Journal of Cosmetic Dermatology, 2020](https://pubmed.ncbi.nlm.nih.gov/31975502/)

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

This serum is unlikely to cause breakouts or clog pores on combination skin, as it has a safe formula with low irritation risk. Combination skin needs lightweight hydrators and ingredients that help balance oily areas without heavy oils.

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

Yes, it has no fragrance and no drying alcohol.

## Alternatives for combination skin

- [Beauty of Joseon Propolis + Niacinamide Glow Serum](https://lovi.care/skincare/sa/p/beauty-of-joseon/propolis-niacinamide-glow-serum/for/combination-skin) — Superior fit — SAR 226.83 at Amazon
- [Augustinus Bader The Serum](https://lovi.care/skincare/sa/p/augustinus-bader/the-serum/for/combination-skin) — Superior fit — SAR 2,799.99 at Amazon
- [SkinCeuticals C E Ferulic](https://lovi.care/skincare/sa/p/skinceuticals/c-e-ferulic/for/combination-skin) — Superior fit — SAR 865.37 at Amazon

## Pairs well with

- Cleanser: [Fresh Soy Face Cleanser](https://lovi.care/skincare/sa/p/fresh/soy-face-cleanser/for/combination-skin) — Superior fit — SAR 191.00 at Amazon
- Hydrating Toner: [Paula's Choice Pore-Reducing Toner](https://lovi.care/skincare/sa/p/paula-s-choice/skin-balancing-pore-reducing-toner/for/combination-skin) — Superior fit — SAR 166.90 at Amazon
- Moisturizer: [COSRX Oil-Free Ultra-Moisturizing Lotion with Birch Sap](https://lovi.care/skincare/sa/p/cosrx/oil-free-ultra-moisturizing-lotion-with-birch-sap/for/combination-skin) — Superior fit — SAR 39.70 at Amazon

## Where to buy

- Amazon.sa: SAR 582.00 (https://www.amazon.sa/dp/B08WCRLVTV?tag=lovisa02-21&linkCode=osi&th=1&psc=1)
Prices checked 5 Nov 2026.

## Ingredients

Water, 3-O-Ethyl Ascorbic Acid Ascorbic Acid, Tetrahexyldecyl Ascorbate Ascorbic Acid, Propanediol, Glycerin, Pentylene Glycol, Sodium Citrate, Squalane, Triethyl Citrate, Gluconolactone, Citric Acid, Polyhydroxystearic Acid, Polyglyceryl-6 Polyricinoleate, Xanthan Gum, Sodium Hyaluronate, Caffeine, Magnesium Ascorbyl Phosphate Ascorbic Acid, Sodium Stearoyl Glutamate, Sodium Benzoate, Lauroyl Lysine, Passiflora Edulis Extract, Sclerotium Gum, Lecithin, Ilex Guayusa Leaf Extract, Ilex Paraguariensis Leaf Extract, Pullulan, Mannitol, Hylocereus Undatus Fruit Extract, Zingiber Officinale Oil Root, Calcium Gluconate, Silica, Potassium Sorbate, Phenoxyethanol, Ergothioneine
## 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/youth-to-the-people/15-vitamin-c-clean-caffeine-energy-serum/for/combination-skin
- United Kingdom: https://lovi.care/skincare/uk/p/youth-to-the-people/15-vitamin-c-clean-caffeine-energy-serum/for/combination-skin
- Ireland: https://lovi.care/skincare/ie/p/youth-to-the-people/15-vitamin-c-clean-caffeine-energy-serum/for/combination-skin
- Germany: https://lovi.care/skincare/de/p/youth-to-the-people/15-vitamin-c-clean-caffeine-energy-serum/for/combination-skin
- France: https://lovi.care/skincare/fr/p/youth-to-the-people/15-vitamin-c-clean-caffeine-energy-serum/for/combination-skin
- Italy: https://lovi.care/skincare/it/p/youth-to-the-people/15-vitamin-c-clean-caffeine-energy-serum/for/combination-skin
- Netherlands: https://lovi.care/skincare/nl/p/youth-to-the-people/15-vitamin-c-clean-caffeine-energy-serum/for/combination-skin
- Spain: https://lovi.care/skincare/es/p/youth-to-the-people/15-vitamin-c-clean-caffeine-energy-serum/for/combination-skin
- Canada: https://lovi.care/skincare/ca/p/youth-to-the-people/15-vitamin-c-clean-caffeine-energy-serum/for/combination-skin
- Australia: https://lovi.care/skincare/au/p/youth-to-the-people/15-vitamin-c-clean-caffeine-energy-serum/for/combination-skin
- Singapore: https://lovi.care/skincare/sg/p/youth-to-the-people/15-vitamin-c-clean-caffeine-energy-serum/for/combination-skin
- Saudi Arabia: https://lovi.care/skincare/sa/p/youth-to-the-people/15-vitamin-c-clean-caffeine-energy-serum/for/combination-skin (this page)
- United Arab Emirates: https://lovi.care/skincare/ae/p/youth-to-the-people/15-vitamin-c-clean-caffeine-energy-serum/for/combination-skin