
Highlights
WHAT IS IT?
Vitamin C Serum
FEATURES
Three forms of Vitamin C, strong anti-oxidant properties, intensive moisture and hydration, counteracts the new formation of age spots, reduce the appearance of pigmentation
BEST FOR
All skin types, especially those concerned with uneven skin tone and anti-aging
CHECKS
Paraben-free, GMO-free, PEG-free, Fragrance-free
Who Is It For?
Adults Both Women And MenWhat Does It Help With?
Uneven Pigmentation Skin Tone Improvement Anti-oxidative Protection Collagen FormationBudget
PremiumHow To Use
Which routine should it be used in?
Instructions:
Key Information
What Dr. Barbara Sturm Says
Product Description:
Dr. Barbara Sturm's THE GOOD C VITAMIN C SERUM deploys her proprietary formulation of Vitamin C in an optimal concentration of 5% that's stable, easily absorbed and gentle on the skin. It contains an active ingredient complex that includes oil-soluble Vitamin C THD, plant-based Vitamin C and stabilized, synthetic Vitamin C in glucosidic form. Together, they help to reduce uneven pigmentation, improve tone and provide anti-oxidative protection from free radicals and environmental stressors for a youthful and healthy-looking complexion. The serum also contains Zinc, which helps to increase the absorption of Vitamin C into the skin. Finally, Vitamin C supports the formation of collagen, which is needed for firm and youthful-looking skin.
About the Brand:
Ingredients Overview
Ingredients List
Vitamin C THD, Vitamin C Glucoside, Olive Leaf Extract, Zinc, Aloe Vera, Purslane Extract, Apricot Kernel Oil, Hyaluronic Acid, Glycerin, Sunflower Oil, Vitamin E
Key Ingredients
Vitamin C THD, Vitamin C Glucoside, Zinc, Aloe Vera, Hyaluronic Acid
Ingredients Details
Aloe Vera
Common Name(s): Aloe vera juice,aloe vera gel,aloe barbadensis
CAS Number: 85507-69-3
DESCRIPTION
What It Does: Provides acemannan-based wound healing and comprehensive moisturising skin conditioning from the quintessential healing plant.
Why It's Used: The most universally recognised natural healing plant โ aloe vera's acemannan polysaccharides, vitamins, and enzymes provide a comprehensive wound healing and soothing profile with thousands of years of documented use.
How It Works: Acemannan (poly-mannose) activates dectin-1 for wound healing immune stimulation. gibberellin promotes fibroblast growth. salicylic acid derivative provides anti-inflammatory. vitamins c and e provide antioxidant. glucomannan provides humectant.
Typically Found In: After-sun products,wound healing,moisturisers,virtually all skin care categories
TECHNICAL DETAILS
Primary Category: Active ingredient โ aloe vera gel
Secondary Functions: Redness reduction,anti-inflammatory,calming
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.5%โ99%
SOURCING & ETHICS
Vegan Status: Yes โ from aloe barbadensis leaf
Halal Status: Yes
Source Notes: Plant-derived extract or synthetic.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Non-irritating; ideal for reactive and sensitive skin.
Safe for Sensitive Skin: Yes โ particularly recommended for sensitive skin
SAFETY & COMPATIBILITY
Safety Profile: Excellent safety profile. ewg score: 1.
Works Well With: Ceramides,panthenol,allantoin,hyaluronic acid,centella asiatica
Avoid Combining With: No significant incompatibilities
SCIENTIFIC NOTE
Aloe vera's clinical evidence for sunburn relief is among the best for any botanical wound healing ingredient. multiple rcts demonstrate that aloe vera gel reduces healing time of first and second degree burns and sunburns, attributed primarily to acemannan's immunomodulatory wound healing activity and the anti-inflammatory salicylate derivatives providing prostaglandin inhibition.
Last Verified: Cosing database,surjushe et al. aloe vera skin review,cir safety assessment
Primary Sources: 2026-03-12
Apricot Kernel Oil
Common Name(s): Apricot kernel oil,botanical carrier oil,emollient fatty acid delivery
CAS Number: N/a
DESCRIPTION
What It Does: Softens and conditions skin by integrating into sc lipid bilayers, delivers essential fatty acids (oleic, linoleic, linolenic) for barrier lipid synthesis, and provides rich, non-stripping moisturisation.
Why It's Used: Natural carrier oils provide the closest compositional match to endogenous sc lipids, delivering emolliency through genuine barrier integration rather than simple surface occlusion.
How It Works: Fatty acid triglycerides partition into sc lipid bilayers โ oleic acid (c18:1) provides fluid, emollient integration; linoleic acid (c18:2) acts as essential ceramide precursor; saturated fatty acids provide more occlusive barrier reinforcement.
Typically Found In: Moisturisers,facial oils,natural skin care
TECHNICAL DETAILS
Primary Category: Functional ingredient โ emollient
Secondary Functions: Barrier sealing,softening
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 1%โ100%
SOURCING & ETHICS
Vegan Status: Conditional
Halal Status: Yes
Source Notes: Plant-derived, synthetic or animal-derived. verify source.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 1/5 โ low; formulation-dependent
Sensitivity Concerns: Non-irritating.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Excellent safety profile. ewg score: 1.
Works Well With: Humectants,ceramides,actives as carrier
Avoid Combining With: No significant incompatibilities
SCIENTIFIC NOTE
Essential fatty acids โ linoleic (c18:2, n-6) and ฮฑ-linolenic (c18:3, n-3) acids โ cannot be synthesised by the body; topical delivery through carrier oils provides direct substrate for ceramide and eicosanoid biosynthesis in the epidermis.
Last Verified: Cosing database,apricot kernel oil carrier oil botanical review
Primary Sources: 2026-03-12
Glycerin
Common Name(s): Glycerol,glycerine,1,2,3-propanetriol
CAS Number: 56-81-5
DESCRIPTION
What It Does: Glycerin pulls water from the environment and deeper skin layers into the outer skin layer (epidermis), boosting moisture levels and keeping skin soft, smooth, and plump.
Why It's Used: It is used in virtually every moisturizer, serum, and cleanser because it is highly effective at hydrating skin, is well-tolerated by all skin types, and enhances the texture and spreadability of formulations.
How It Works: As a humectant, glycerin forms hydrogen bonds with water molecules, trapping them in the skin. it also reinforces the skin barrier by integrating into lipid structures between skin cells.
Typically Found In: Moisturizers,serums,cleansers,toners,sheet masks,sunscreens,body lotions,shampoos,conditioners
TECHNICAL DETAILS
Primary Category: Humectant
Secondary Functions: Skin barrier support,emollient,solvent
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 1%โ30% (typical: 3โ10%)
SOURCING & ETHICS
Vegan Status: Yes โ plant-derived (coconut, soy, palm) or synthetic
Halal Status: Yes โ when plant-derived or synthetic; verify source with supplier
Source Notes: Derived from plant oils via hydrolysis or saponification; synthetic versions also available. palm-derived glycerin carries sustainability concerns.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low; non-irritating at all standard concentrations
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Extremely rare allergic reactions; generally safe for all skin types including sensitive and baby skin
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Widely recognized as safe. ewg hazard score: 1. no significant concerns for irritation, sensitization, or toxicity at typical concentrations (up to 50%).
Works Well With: Hyaluronic acid,ceramides,niacinamide,panthenol,urea,peptides,retinol,ahas/bhas
Avoid Combining With: No known incompatibilities at standard concentrations
SCIENTIFIC NOTE
Glycerin is an endogenous skin component found naturally in the stratum corneum. aquaporin-3 channels in keratinocytes facilitate glycerin transport, making it integral to natural skin hydration pathways.
Last Verified: Cosing database,cir safety assessment,ewg skin deep,inci decoder
Primary Sources: 2026-03-12
Hyaluronic Acid
Common Name(s): Ha,sodium hyaluronate (salt form),hyaluronan,d-glucuronic acid-n-acetyl-d-glucosamine polymer
CAS Number: 9004-61-9
DESCRIPTION
What It Does: Hyaluronic acid draws and locks moisture into the skin at multiple depths (surface and deeper layers depending on molecular weight), creating a plumping, smoothing, and hydrating effect.
Why It's Used: It is used because it is endogenous to human skin, making it exceptionally biocompatible and non-irritating. its unparalleled moisture-binding capacity makes it the most effective hydrating ingredient available.
How It Works: Ha binds water molecules through its many hydroxyl and carboxyl groups, creating a gel-like matrix. high molecular weight ha (>500 kda) hydrates the skin surface; low molecular weight ha (<50 kda) penetrates deeper to provide interior hydration.
Typically Found In: Serums,moisturizers,sheet masks,toners,eye creams,lip treatments,dermal fillers (injectable)
TECHNICAL DETAILS
Primary Category: Active ingredient โ humectant/hydrator
Secondary Functions: Barrier repair,plumping,anti-aging
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.1%โ2% (effective at very low concentrations; multi-weight ha provides superior results)
SOURCING & ETHICS
Vegan Status: Yes โ biotechnology-derived (microbial fermentation of streptococcus equi or b. subtilis); vegan-certified versions widely available
Halal Status: Yes
Source Notes: Originally extracted from rooster combs; now predominantly produced via biotechnology (bacterial fermentation), which is vegan and more sustainable.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low; one of the gentlest skincare ingredients known
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: In very dry environments, high-molecular-weight ha on the surface can potentially draw moisture out of the skin if not sealed with an occlusive. apply to damp skin and seal with moisturizer.
Safe for Sensitive Skin: Yes โ ideal for all skin types including rosacea, eczema, and post-procedure skin
SAFETY & COMPATIBILITY
Safety Profile: Exceptional safety profile. endogenous molecule โ no toxicity concerns. ewg hazard score: 1. safe during pregnancy.
Works Well With: Virtually all ingredients; especially ceramides,glycerin,peptides,retinol (reduces irritation),niacinamide,vitamin c
Avoid Combining With: No significant incompatibilities; high concentrations of alcohol in a formula may reduce its efficacy
SCIENTIFIC NOTE
Hyaluronic acid naturally degrades in skin (half-life ~1โ2 days). the skin produces it endogenously, but production decreases with age. multi-molecular-weight ha formulas provide hydration at both surface and deeper skin levels.
Last Verified: Cosing database,cir safety assessment,papakonstantinou et al. (2012) dermato-endocrinology
Primary Sources: 2026-03-12