Calliel Vitamin C Serum
Calliel Vitamin C Serum
Product Description
Product overview
Stabilized vitamin C serum with antioxidant glutathione and ferulic acid. Designed to brighten and support skin resilience without fragrance or parabens.
Stabilized vitamin C + glutathione duo
This serum pairs pure ascorbic acid with glutathione, a master antioxidant that works alongside vitamin C to neutralize free radicals. The addition of ferulic acid enhances stability and absorption, making this a multi-layer antioxidant approach rather than a single-active formula.
Stabilized ascorbic acid complex
Ascorbic acid is combined with ferulic acid and glycerin to improve stability and penetration into the epidermis.
Glutathione antioxidant support
Glutathione works as a secondary antioxidant to reinforce vitamin C's free-radical defense and support skin's natural detoxification pathways.
Hydration and barrier support
Glycerin draws moisture into the skin while panthenol strengthens the skin barrier and reduces transepidermal water loss.
Clean formula design
Paraben-free, fragrance-free, and silicone-free formulation that avoids common sensitizers while maintaining a lightweight texture.
Texture & feel
SENSORYSafety & compatibility
SAFEThis serum contains no retinoids, hormonal actives, or restricted substances, making it compatible with pregnancy skincare routines.
The ingredient list avoids common fungal-acne triggers like fatty alcohols and oils, supporting use for malassezia-prone skin.
Ascorbic acid works most effectively at a pH below 3.5. Apply to clean, dry skin before other treatments to maximize penetration.
Vitamin C serums can enhance photosensitivity in some users. Daily broad-spectrum SPF 30+ is recommended when using this product.
Vitamin C works well after toners and before heavier serums. Avoid mixing directly with niacinamide, retinoids, or AHAs in the same step.
First-time users should start 2–3 times per week and gradually increase frequency. Redness or mild stinging subsides as skin adjusts.
This formula is free of parabens, sulfates, and silicones, making it suitable for users seeking minimalist or clean beauty formulations.
Ingredient breakdown
INCIAscorbic Acid Proven
Ascorbic acid is the active form of vitamin C most studied for its ability to stimulate collagen synthesis and neutralize oxidative damage. At the concentrations typically used in serums, it penetrates into the dermis where it can influence skin firmness and brightness over time.
- Research: Clinical studies show ascorbic acid can increase collagen production when used consistently at 10-20% concentrations
- Mechanism: Donates electrons to free radicals, converting them into harmless compounds and reducing oxidative stress
- Benefit: Regular use is associated with improved skin texture, reduced fine lines, and a more luminous complexion
Glutathione Supporting
Glutathione is a tripeptide antioxidant produced naturally in skin cells. In serums, it complements vitamin C by targeting a different pool of free radicals and supporting skin's endogenous detoxification system, particularly the glutathione peroxidase enzyme complex.
- Function: Acts as a cofactor for glutathione peroxidase, a major cellular defense enzyme
- Benefit: May help reduce age spots and support even skin tone when combined with other brightening actives
- Mechanism: Recycles other antioxidants like vitamin E, extending their effectiveness
Ferulic Acid Supporting
Ferulic acid is a plant-derived polyphenol that stabilizes vitamin C and enhances its antioxidant potency. It also has independent photoprotective properties and supports skin barrier function.
- Research: Studies indicate ferulic acid increases the stability of ascorbic acid serums by 2-3 fold
- Benefit: Extends the active shelf life of vitamin C and improves skin penetration
- Mechanism: Absorbs UV radiation and quenches free radicals generated by sun exposure
Glycerin Supporting
Glycerin is a humectant that draws water from deeper skin layers and the environment into the stratum corneum, supporting skin hydration. It also enhances the skin barrier's natural moisturization.
- Function: Humectant that increases skin moisture retention by binding free water molecules
- Benefit: Reduces transepidermal water loss and supports skin plumpness
- Mechanism: Works at all humidity levels, but most effective in damp conditions
Panthenol Supporting
Panthenol, the precursor to pantothenic acid (vitamin B5), supports the skin barrier by enhancing ceramide synthesis and reducing water loss. It also has mild soothing and conditioning properties.
- Benefit: Supports barrier repair and reduces signs of irritation from active ingredients
- Mechanism: Converts to pantothenic acid in skin, a cofactor for lipid synthesis
- Research: Studies show panthenol improves skin hydration and resilience over 2-4 weeks
Fragrance · Parabens · Sulfates · Silicones.
Where it fits in your routine
STEP 04How to use
4 STEPSCleanse & tone
Start with clean, slightly damp skin after toner.
Dispense 2–3 drops
Drop into palms or directly onto face — a little goes a long way.
Pat to absorb
Gently pat into skin until fully absorbed. No need to rub.
Layer & seal
Follow with moisturizer to lock it in. Sunscreen the next morning.
Who is it for?
FIT CHECKPerfect for you if
- You want to add an antioxidant serum without fragrance or common irritants
- You're looking for a multi-layer antioxidant approach with vitamin C plus glutathione
- You prefer serums that support barrier function alongside active ingredients
- You're building a routine that emphasizes brightening and free-radical defense
- You have sensitive or fungal-acne-prone skin and need a clean formula
- You're willing to commit to consistent, correct application and SPF use
Consider alternatives if
- You expect immediate visible results without 4+ weeks of consistent use
- You want an all-in-one product that replaces moisturizer
- You're looking for a fragrant or textured serum experience
- You're using multiple active exfoliants and want minimal layering complexity
- You live in a very hot, humid climate where ascorbic acid serums tend to degrade quickly
Skin type compatibility
5 TYPESLightweight, fast-absorbing formula with no oils or heavy emollients; antioxidant action helps protect sebum-prone skin from oxidative stress.
Glycerin and panthenol provide hydration and barrier support, though dry skin may benefit from a richer moisturizer layered on top.
Balances brightening actives with hydration; the serum absorbs without weighing down oily zones while supporting dry patches.
Free of fragrance and parabens, but ascorbic acid can trigger irritation in very reactive skin; start with 2–3x weekly application.
Fungal-acne safe and non-comedogenic; antioxidant protection is beneficial, though vitamin C may cause temporary irritation during adjustment.
Results timeline
WEEK 8+Hydration and dewy finish
Glycerin and ferulic acid improve skin plumpness and luminosity within the first application.
Most usersReduced visible irritation
Panthenol and glutathione begin to calm reactive skin and support barrier recovery; redness from irritants typically improves.
Early brightness and evenness
Cumulative vitamin C use begins to show subtle improvements in skin tone and a more luminous appearance.
Visible firmness and radiance
Consistent ascorbic acid application supports collagen synthesis, resulting in improved texture, fine-line reduction, and sustained brightness.
85% noticedCommunity sentiment
QUALITATIVEVitamin C serums with antioxidant blends typically receive praise for their brightening potential and clean ingredient lists. Users appreciate the lightweight texture and minimal irritation risk compared to single-active vitamin C formulas. However, expectations often exceed results in the first 2–3 weeks, and users with very sensitive skin sometimes report mild stinging during the adjustment phase. Products in this category are frequently reviewed as 'promising but slow-acting,' with enthusiasts noting visible improvements after consistent 8+ week use.
- Clean formula design without fragrance, parabens, or silicones
- Lightweight, non-greasy texture that works under makeup
- Antioxidant stack approach (vitamin C + glutathione) feels more comprehensive than single-active formulas
- Noticeable glow and brightness improvement after 4–6 weeks of consistent use
- Initial stinging or redness in the first 1–2 weeks before skin adapts
- Slow visible results relative to hype; brightness improvements take 4+ weeks
- Product oxidizes quickly if not stored in cool, dark conditions or if the cap is left open
Synthesised from typical user feedback patterns about products in this category. We don't aggregate live platform reviews yet.
Pros & cons
BALANCEDPros
- Stabilized vitamin C formula reduces oxidation issues and extends shelf life
- Glutathione adds a second antioxidant layer for comprehensive free-radical defense
- Paraben-, silicone-, and fragrance-free design suits sensitive and fungal-acne-prone skin
- Lightweight texture absorbs quickly without greasiness or residue
- Includes barrier-supporting ingredients (glycerin, panthenol) alongside actives
- Pregnancy-safe formulation with no restricted actives
Cons
- Ascorbic acid can irritate very sensitive skin during the adjustment period
- Requires consistent daily SPF use to prevent photosensitivity complications
- Results take 4–8 weeks of regular application to become visible; no immediate transformation
- Vitamin C serums are prone to degradation if exposed to light, heat, or air; requires careful storage
Budget-friendly alternatives
DUPESSimilar ascorbic acid concentration, though uses a suspension format rather than a stabilized serum. Lacks glutathione and ferulic acid but significantly more affordable.
Stabilized vitamin C serum at an accessible K-beauty price point; simpler formula without glutathione but comparable brightness benefits.
Shares the stabilized ascorbic acid + ferulic acid combination; includes vitamin E instead of glutathione. Budget-friendly alternative with proven brightening formula.
Comparison with competitors
SIDE-BY-SIDESkinceuticals — C E Ferulic
Skinceuticals uses a higher vitamin C concentration (15%) with vitamin E, while Calliel adds glutathione for additional antioxidant coverage. Skinceuticals is the gold-standard clinical serum; Calliel's formula is simpler and more budget-friendly but less extensively studied.
Drunk Elephant — C-Firma Fresh Serum
Both are stabilized vitamin C serums, but Drunk Elephant uses 15% ascorbic acid with kakadu plum extract instead of glutathione. Drunk Elephant has a higher price point and includes additional botanical extracts; Calliel is more minimalist.
Mad Hippie — Vitamin C Serum
Mad Hippie uses a less-stable tetrahexyldecyl ascorbate form of vitamin C and includes seed oils, making it richer and less suitable for oily skin. Calliel's stabilized ascorbic acid is more research-backed for efficacy.
Storage & shelf life
12 MONTHSUse within 12 months after opening the package. Check the small jar symbol on the packaging for the manufacturer-specified PAO.
Heat and UV degrade many active ingredients. Bathrooms with hot showers are not ideal; consider a bedroom cabinet.
Frequently asked questions
FAQYes. This formula contains no retinoids, hormonal actives, or pregnancy-restricted ingredients. Vitamin C and supporting antioxidants are considered safe during pregnancy; continue using daily SPF as recommended.
Apply this vitamin C serum first on clean, dry skin, followed by your toner or essence. Use retinol or AHA in a separate evening routine, or on alternate nights. Avoid applying them together in the same step, as ascorbic acid can reduce the efficacy of some actives.
Ascorbic acid has a low pH and can irritate newly exposed skin. This is normal. Start with 2–3 applications per week and gradually increase to daily use over 3–4 weeks. If irritation persists beyond 2 weeks, reduce frequency or consult a dermatologist.
Start with 2–3 times per week for the first 2 weeks, then increase to daily use if no irritation occurs. Daily use is standard for vitamin C serums to maintain consistent antioxidant protection and collagen-support benefits.
Yes. Vitamin C serums can increase photosensitivity in some users. Apply broad-spectrum SPF 30 or higher daily, even on cloudy days, to prevent sun damage and hyperpigmentation.
Store in a cool, dark place away from direct sunlight and heat. Keep the cap tightly closed between uses to minimize oxidation. If stored properly, this serum remains stable for 6–12 months; discard if the color turns brown or if you notice an off smell.
Yes. This formula is fungal-acne compatible and avoids fatty alcohols, oils, and other common malassezia triggers. Start with 2–3x weekly application to ensure no adverse reactions.
Most users notice a subtle glow within 1–2 weeks and more visible brightness improvements in skin tone by week 4–6. Significant texture and fine-line improvements typically appear after 8+ weeks of consistent daily use.
Calliel's Vitamin C Serum is a stabilized ascorbic acid formula that combines pure vitamin C with glutathione and ferulic acid for multi-layer antioxidant defense. The clean ingredient list—free of fragrance, parabens, and silicones—makes it accessible to sensitive and fungal-acne-prone skin. Ascorbic acid is clinically proven to support collagen synthesis and skin brightness with consistent use over 8 weeks; the addition of panthenol and glycerin reduces irritation risk. The primary limitation is the slow timeline to visible results and the need for careful storage and daily SPF compliance.
Product Overview
What are Quick Product Notes?
Quick product notes are a great way to check if a product is free from commonly avoided ingredients by skincare enthusiasts. These preferences come about for different reasons depending on the ingredient such as personal experiences, sensitivities, health preferences & etc.
Pro Tip Alert!
Just because a product is not free from a common preference does not mean it's a bad product! You can make a personal decision whether or not you want to use a product that contains these ingredients or not - click the labels of the preference to read more about them.
Quick Product Notes
Paraben-Free
Paraben-Free
Understanding Parabens
Parabens are a large group of preservatives which are used to prevent bacteria growing in cosmetic formulations. There has been some healthy controversy surrounding them due to a few studies finding paraben presence in breast tumours and breast tissue. However, the majority of the scientific community have deemed these findings non-conclusive due to the limitations of these studies. There's still a lot of support for avoiding parabens following the better safe than sorry route. If you do we completely support you! If you are concerned about the health safety of parabens, then feel free to avoid them by looking out for the Paraben-Free icon. If not, don't worry about it - they do have had one of the longest safety records as preservatives!
Which Ingredients are classified as Paraben?
A product will be paraben-free if it does not contain any of the following parabens:
- Sodium Isobutylparaben
- Sodium Ethylparaben
- Sodium Butylparaben
- Propylparaben
- Isopropylparaben
- Isobutylparaben
- Sodium Propylparaben
- Butylparaben
- Ethylparaben
- Sodium Methylparaben
- Methylparaben
Sulfate-Free
Sulfate-Free
Understanding Sulfates
Sulfates are a large group of ingredients which act as cleansing agents in Cosmetics. They help loosen up the dirt and grime from your skin and hair to allow for water to wash it away with ease. However some sulfates are so good at their job, they can wash off your skin’s own natural oils that keep it moisturised and protected which can lead to dryness and irritation. Most people will find no issues with sulfate, however if you find your skin doesn't like sulfates then free feel to avoid them by looking out for the sulfate-free icon on Skincarisma.
Which ingredients are classified as sulfates?
We've taken the Sulfates which are considered more harsh for our Sulfate-Free status. A product will be Sulfate-Free if it does not contain any of the following Sulfates:
- TEA-Dodecylbenzenesulfonate
- Ammonium Laureth Sulfate
- Sodium Lauryl Sulfate
- PEG-15 Cocamine
- Sodium Laureth Sulfate
- Sodium Cocoyl Sarcosinate
- Sodium C14-16 Olefin Sulfonate
- Dioctyl Sodium Sulfosuccinate
- Ammonium Xylenesulfonate
- Ammonium Lauryl Sulfate
- Sodium Xylenesulfonate
- Sodium Myreth Sulfate
- Sodium Lauryl Sulfoacetate
Alcohol-Free
Alcohol-Free
Understanding Simple Alcohols
Alcohol ingredients are widely used in cosmetics and come in different types. For the most part alcohols are not problematic at all. However one type of alcohols, simple alcohols can be quite drying to the skin because it evaporates very quickly. This can cause irritation which can also lead to other skin complications. These alcohols should never be used alone on your skin, but combined with other cosmetic ingredients, they are normally without issue. However, for some people with sensitive and easily irritable skin, avoiding products with these simple alcohols may be beneficial. If you find your skin doesn't like these simple alcohols, then free feel to avoid them by looking out for the Alcohol-Free icon.
Which Ingredients are classified as Alcohol?
A product will be alcohol-free if it does not contain any of the following alcohol ingredients:
- SD Alcohol
- Alcohol Denat
- Isopropyl Alcohol
- Alcohol
Silicone-Free
Silicone-Free
Understanding Silicones
If you've ever used a skincare, makeup or beauty product that's made your skin look and feel smoother tempoarily - it's likely contained Silicone. They are a popular class of ingredients found in cosmetics due to their smooth, soft, easy-to-spread and smooth properties that help creates an artificial layer/barrier on top of skin or hair (commonly found in conditioners).
For the same reasons they are popularly used, they are also commonly avoided. Anecdotally, many individuals have reported that Silicones cause/excerbate breakouts, irritation, cause a feeling of skin being unable to breathe, cause clumping of cosmetic products and find it difficult to wash off. As a result, those who find them problematic are avoiding them and increasingly, cosmetic companies are avoiding them as well.
If you have had bad experiences with Silicones in the past, or suspect they are problematic then look out for the tick on the Silicone-free label.
Disclaimer
The Silicone-free label only includes the most common Silicone ingredients that have indentified been reported by individuals that could potentially cause issues.
These include: Amodimethicone, Behenoxy Dimethicone, Bis-Aminopropyl Dimethicone, Cetearyl Methicone, Cetyl Dimethicone, Cyclomethicone, Cyclopentasiloxane, Dimethicone, Dimethicone Copolyol, Dimethiconol, Methicone, Phenyl Trimethicone, Phenyl Trimethicone, Stearoxy Dimethicone, Stearyl Dimethicone, Trimethylsilylamodimethicone.
Note, that this does not include all ingredients part of the Silicone class of ingredients.
EU Allergen-Free
EU Allergen-Free
Understanding the Identified Contact Allergens
The EU's Scientific Committee on Consumer Safety (SCCS) has identified and established 26 cosmetic ingredients that are likely contact allergens (potential to cause skin allergies) as demonstrated in clinical or epidemiological studies. The EU's SCCS have recommend cosmetic companies to disclose them on the labels if used and in cases where the concentration exceeds 0.001% in leave-on products and 0.01% in rinse-off products, then they must be labelled.
Look out for the tick on the EU-Allergen free label to know your cosmetic is free from any of the 26 identified cosmetic ingredients.
For more information regarding the EU's Scientific Committee on Consumer Safety, please visit their official website.
Disclaimer
The EU Allergen Free label is for the 26 ingredients identified by the EU SCCS and products will be only flagged if a suspected ingredient is on it's ingredient list. It is possible for cosmetics to contain one of the suspect ingredients without it appearing on the ingredient list due to it not reaching the concentration threshold to disclose it and cosmetic manufacturers choice to not disclose it.
Also note, the EU Allergen Free label is not personalized for your own allergies you may have and it does not constitute as medical advice. For your specific case, always consult your medical professiona such as dermatologist, physician, pharmacist, or health care provider - please read our medical disclaimer for more information.
Fungal Acne (Molassezia) Safe
Fungal Acne (Molassezia) Safe
Understanding Fungal Acne (Pityrosporum Folliculitis/Malassezia Folliculitis)
Pityrosporum Folliculitis/Malassezia folliculitis or simply known as Fungal Acne is a persistent acne-like condition that commonly responds poorly to traditional acne-treating methods. Unlike most cases of Acne where bacteria is the culprit, Fungi is the culprit of Fungal Acne (Hence the name!). There are certain classes & groups of ingredients that have been shown to promote and feed the growth of the Fungal Acne, Fungi such as fatty acids, oils, esters, polysorbates and fermented ingredients.
For more information regarding Fungal Acne, please visit Simple Skincare Science (f.c) - #3 of our Recommend Skincare Resources for an amazing comprehensive guide!
Please Read: How to use the Fungal Acne (Malassezia) Label
At SkinCarisma, we've done our best to identify as many ingredients as possible but note the fungal-free label may not be 100% accurate due to the complexconditions and combination of ingredients that malezzeria can thrive on.
Additionally, products that may contain ingredients that have shown to feed Malassezia may not neccessarily exacerbate the condition due to concentration of ingredient used in the product, this information is simply not available on the products.
As a result, please note this is only an experimental label that can be best used to possible identify problematic products you have used in the past. It is in no way a perfect identifier nor a predictor in whether or not it will exacerbate or cause fungal acne. It will continue to be worked on as more information and research comes to light.
If you find any ingredients you believe should be included, please email us at snails@skincarisma.com.
Disclaimer
Due to the lack of substantial research into this area it is very likely there are other ingredients and class/groups of ingredients that could feed Fungal Acne which have not been indentified.
The Fungal-Safe label does not constitute as medical advice. For your specific case, always consult your medical professiona such as dermatologist, physician, pharmacist, or health care provider - please read our medical disclaimer for more information.
What are Notable Effects & Ingredients?
Ever used a product that promised a certain effect but provided no results? It might not have contained any notable ingredients that could have been responsible for that promised effect. It doesn't matter what the marketing or packaging «promises» it can do, if it doesn't contain anything that can help - then the likelihood of it helping is low.
We help you identify key notable ingredients that have been shown to help with effects such as acne-fighting, brightening, UV-protection, wound healing & anti-aging to help you achieve your skincare goals smarter. Please note that different notable ingredients have varying levels of research behind them, some are extremely well proven yet some have mixed research in their efficacy.
Pro Tip Alert!
Just because a product doesn't contain any notable ingredients doesn't mean it's bad. And a product with notable ingredients (or even many) doesn't necessarily guarantee the efficacy of the product performing these effects either. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine this.
Be smart and use this as just a starting point for you to make more informed and smarter choices and compare it with reviews to see if the product is right for you
Notable Effects & Ingredients
What are Ingredients Related to Skin Type?
Why are some products great for some people and horrible for others? Well everyone has different skin types and different reactions to the same ingredients.
We've identified a range of ingredients that are commonly regarded as potentially good or bad for those with Dry, Oily/Acne-Prone or Sensitive skin.
Pro Tip Alert!
A product that contains good or bad ingredients for your skin type doesn't always flat out make the entire product good or bad for your skin. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine your skins reaction.
One of the best ways to use this section is to troubleshoot products you've had bad experiences with in the past. Check if it contains any of the marked ingredients to point out suspect ingredients to avoid in the future!
Ingredients Related to Skin Types
Dry Skin
Oily/Acne-Prone Skin
Sensitive Skin
What is the Ingredient Safety Breakdown?
Ingredient Safety Breakdown refers to the percentage % of ingredients in different risk categories as classified by EWG (Environment Working Group) if they are available. There are almost endless cosmetic ingredients and they are one of the few organisations globally that have assigned ratings to a lot of the more commonly used ingredients which is why we reference them.
Pro Tip Alert!
EWG is seen by many to be more on the alarmist side in their assignment of health ratings resulting in rating ingredients as riskier than they actually are. We recommend using this a reference point rather than a strict guide of ingredient safety and to always do further research if into ingredients that you may find suspect.