Works for:
based on ingredients and %- Moisturizing
- Anti-oxidation
- Evens skin tone
- Anti-aging
Can it cause trouble?
- Irritation risk: high
- Comedogenic risk ingredients: 2
Key actives
Product Summary
"Dr. K - C Concentrate Oil Serum" is effective for: Evens skin tone
This product could be helpful for: Moisturizing and Anti-aging, but its actives are not the most effective or are not well-studied.
Ingredient callouts
- this product includes a form of Retinoids (vitamin A) - retinyl palmitate 0.35% - 0.80%, but this type of vitamin A is not very effective. It could in theory help with fine lines and wrinkles, but the effect is most likely minimal.
- Humectants (glycerin 0.15% - 0.55%). These ingredients help attract water to the upper layer of the skin and improve the skin hydration.
Price
The product retails for 79.70$ in the United States.
For a detailed price comparison: click here.
Anti-oxidation
This product contains antioxidants (glutathione) that can help neutralize free radicals in skin. By doing so, they can lessen the damage the skin gets from the UV light (sun).
A peptide that can help neutralize free radicals in skin and reduce melanin production resulting in skin lightening effect and reduction in hyperpigmentation. It can also help attract moisture to the upper layer of the skin
Might help neutralize free radicals in skin
A plant oil with high content of volatile compounds that can irritate the skin. Can be used as a fragrance. Has anti-bacterial properties and might help neutralize free radicals on the surface of the skin
Can be helpful in reducing inflammation in skin, including inflamed acne. It can be irritating
Might be helpful in neutralizing free radicals. Can have a dehydration effect that might somewhat decrease the look of puffy eyes
Pure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself
A derivative of vitamin C that is more stable, but less bioavailable than the pure form of vitamin C. It does not penetrate the skin well, but has been shown to convert to pure vitamin C once in skin. It can be helpful in stimulating collagen production and lightening the skin tone, but the required concentration is likely to be very high
Being a lipid soluble form of vitamin C, it is more stable and can penetrate the skin better than L-Ascorbic acid. It is effective in protecting the skin from free radicals, as well as evening the skin tone, but is less effective in stimulating collagen production compared to L-Ascorbic acid.
Evens skin tone
This product can help reduce hypepigmentation and even out the skin tone because it contains the following effective ingredients: glutathione
Keep in mind that you would need to apply any topical skincare targetted at hypigmentation consistently for a couple of months to get a result. No topical skincare product can help get rid of hyperpigmentation (including post-acne marks and age spots) instantly.
A peptide that can help neutralize free radicals in skin and reduce melanin production resulting in skin lightening effect and reduction in hyperpigmentation. It can also help attract moisture to the upper layer of the skin
Is proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production
Three steps removed from the active form of vitamin A - retinoic acid. To have an effect in the skin, it first needs to be converted twice to become the retinoic acid. This means it is less potent than retinol, but could also be less irritating. Once converted to the retinoic acid in the skin, it helps against all signs of aging, improves skin cell turnover and helps fight blemishes and clogged pores. However, in many cosmetic formulations, it is used in a concentration that is too low to have the full effect
A derivative of vitamin C that is more stable, but less bioavailable than the pure form of vitamin C. It does not penetrate the skin well, but has been shown to convert to pure vitamin C once in skin. It can be helpful in stimulating collagen production and lightening the skin tone, but the required concentration is likely to be very high
Anti-aging
This product contains glutathione. This ingredient help neutralize free radicals in skin. By doing so, they might be able to prevent early signs of aging (like fine lines and wrinkles), at least to some extent. These ingredients will not be able to "reverse" signs of aging.
Is proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production
Three steps removed from the active form of vitamin A - retinoic acid. To have an effect in the skin, it first needs to be converted twice to become the retinoic acid. This means it is less potent than retinol, but could also be less irritating. Once converted to the retinoic acid in the skin, it helps against all signs of aging, improves skin cell turnover and helps fight blemishes and clogged pores. However, in many cosmetic formulations, it is used in a concentration that is too low to have the full effect
A derivative of vitamin C that is more stable, but less bioavailable than the pure form of vitamin C. It does not penetrate the skin well, but has been shown to convert to pure vitamin C once in skin. It can be helpful in stimulating collagen production and lightening the skin tone, but the required concentration is likely to be very high
Pure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself
Being a lipid soluble form of vitamin C, it is more stable and can penetrate the skin better than L-Ascorbic acid. It is effective in protecting the skin from free radicals, as well as evening the skin tone, but is less effective in stimulating collagen production compared to L-Ascorbic acid.
Moisturizing
What does the product description say?
Recommended for body such as elbows and heels, dry scalp, and dry hair tips.
Source: Yesstyle
This product can help improve hydration of the skin with the two types of ingredients.
The first type is called “humectants”:
these ingredients help attract water.
When humectants are on the surface of the skin, they “pull in” the moisture from the outside environment, or from
within deeper layers of the skin. The following ingredients in this product do the job:
glycerin, butylene glycol.
This product also contains ingredients called “occlusives”. They help reduce the speed with which our skin loses moisture to the outside environment. These ingredients also help soften the upper layer of the skin, so it feels less tight and nicer to the touch. The following ingredients in this product do the job: simmondsia chinensis seed oil, squalane.
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
Softens the upper layer of skin and helps restore the healthy skin barrier. Has shown to help calm down inflammation in skin. It is a stable oil, meaning that it retains its properties even when exposed to air.
An oil naturally present in skin. Works as an emollient to soften the skin and form a protective layer on its surface without a greasy feeling.
Can support skin barrier function and reduce inflammation in skin
A good moisturizing plant oil. Due to the high linoleic acid content, it helps soften the upper layer of the skin, reduce water loss and support skin barrier function
A peptide that can help neutralize free radicals in skin and reduce melanin production resulting in skin lightening effect and reduction in hyperpigmentation. It can also help attract moisture to the upper layer of the skin
An emollient that helps soften the skin. Can increase penetration of other ingredients
An emollient that helps soften the skin and create a nice product texture
Helps soften the upper layer of the skin
Helps soften the upper layer of the skin
Used to create a nice product texture and help delivery of other ingredients. Might be somewhat helpful in attracting water to the upper layer of the skin
Used to preserve products, dissolve other ingredients and create a nice product texture
Is proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production
Pure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself
How honest is this product?
| Promise | Can it deliver? |
|---|---|
| Moisturizing |
Total Promises Fulfilled score: 75/100.
We receive a small commission for purchases made through these links at no cost for you. Thank you for your support! Learn more
Potential irritants
Comedogenic ingredients
User reviews (0)
Averages from community submissions.
No reviews yet for this product.
Be the first to share your experience!
Tried this product?
Help capture what the ingredient list can't—texture, finish, pilling, scent, and more. Answer what you can, skip the rest.
Takes ~30 seconds.
Reviews are shown in aggregate. No personal details.
| Product | Similarity | Price | Irritancy |
|---|---|---|---|
 Dr. K C Concentrate Oil Serum | Current | $79.70 | |
HoliFrog Galilee Antioxidant Dewy Drop Serum | 86% | $46.00 | |
 The Saem The Essential Lactobiotic Firming Ampoule | 85% | $25.80 | |
Squigs Double Shot Face Serum | 85% | $28.00 | |
 Primera Pure Brightening Serum | 84% | - | |
 Centellian24 Expert Madeca Mela Capture Ampoule | 84% | $40.90 |
Key Actives
Potential irritants
Comedogenic ingredients
All ingredients
Ingredient list view
Squalane, Ethylhexyl palmitate, Simmondsia chinensis seed oil, Hema, Vaccinium myrtillus leaf extract, Roe extract, Rose extract, Rosmarinus officinalis leaf extract, Unknown, Rosa damascena extract, Unknown, Lavandula angustifolia oil, Rosmarinus officinalis leaf oil, Decane, Ascorbyl palmitate, Magnesium ascorbyl phosphate, Retinyl palmitate, Thiamine hcl, Niacinamide, Pyridoxine hcl, Cyanocobalamin, Riboflavin, Tocopherol, Caffeine, Glutathione, Zea mays oil, Polyglyceryl-10 oleate, Sucrose stearate, Tricaprylin, Octyldodecyl myristate, Butylene glycol, Glycerin, Water, Sorbic acid, Pentylene glycol, Phenoxyethanol
- Allergic contact dermatitis induced by rosemary leaf extract in a cleansing gel
- Safety Assessment of Rosmarinus officinalis (Rosemary)-Derived Ingredients as Used in Cosmetics
- Rosmarinus officinalis Extract Suppresses Propionibacterium acnes–Induced Inflammatory Responses
- Assessment report on Rosmarinus officinalis L., aetheroleum and Rosmarinus officinalis L., folium
- Screening of plant extracts for antimicrobial activity against bacteria and yeasts with dermatological relevance
- Occupational contact dermatitis due to essential oils
- The in vitro antimicrobial activity and chemometric modelling of 59 commercial essential oils against pathogens of dermatological relevance
- Antimicrobial and Antioxidant Properties of Rosemary and Sage (Rosmarinus officinalis L. and Salvia officinalis L., Lamiaceae) Essential Oils
- Chemical Composition, Plant Genetic Differences, Antimicrobial and Antifungal Activity Investigation of the Essential Oil of Rosmarinus officinalis L.
- Stability, transdermal penetration, and cutaneous effects of ascorbic acid and its derivatives
- Topical L-ascorbic acid: percutaneous absorption studies
- Niacinamide - mechanisms of action and its topical use in dermatology
- Gehring, W. (2004). Nicotinic acid/niacinamide and the skin. Journal of Cosmetic Dermatology, 3(2), 88–93. doi:10.1111/j.1473-2130.2004.00115.x
- Topical vitamin B12--a new therapeutic approach in atopic dermatitis-evaluation of efficacy and tolerability in a randomized placebo-controlled multicentre clinical trial
- Superiority of a vitamin B12-containing emollient compared to a standard emollient in the maintenance treatment of mild-to-moderate plaque psoriasis
- Vitamin E in dermatology
- Vitamin E and Skin Health
- Glutathione as a skin whitening agent: Facts, myths, evidence and controversies
- Glutathione for skin lightening: a regnant myth or evidence-based verity?
- Glutathione for skin lightening for dermatologists and cosmetologists
- Content of fatty acids in corn (Zea mays L.) oil from Ecuador
- Glycerol and the skin: holistic approach to its origin and functions