
Highlights
WHAT IS IT?
Vitamin C powder serum booster with 3 ingredients
FEATURES
Powder form for stability, combines Vitamin C and Ferulic Acid
BEST FOR
All skin types
CHECKS
Does not contain parabens, silicones, sulfates
Who Is It For?
Adults Both Women And MenWhat Does It Help With?
Brightening Skin Reducing Dark Spots Evening Skin Tone Smoothing SkinBudget
PremiumHow To Use
Which routine should it be used in?
Instructions:
Key Information
What True Botanicals Says
Product Description:
Dramatically give the look of brighter skin and help reduce the appearance of dark spots with this potent and effective powder-form of Vitamin C. Vitamin C is notoriously unstable; it starts to degrade the moment it's exposed to liquid. That's why we bottled up Vitamin C's super powers in powder form - so it remains stable and potent until the moment you use it. This booster combines Vitamin C and Ferulic Acid to support surface skin cell turnover and protect overall skin integrity to reveal even-toned, smoother, and brighter looking skin. Supercharge your favorite water-based serum or moisturizer by mixing in this gold standard of Vitamin C day and night. Winner of the 2017 E Style Beauty Awards.
About the Brand:
Ingredients Overview
Ingredients List
tapioca starch, ascorbic acid, ferulic acid
Key Ingredients
Vitamin C (ascorbic acid), Ferulic Acid
Ingredients Details
Ascorbic Acid
Common Name(s): Vitamin c,l-ascorbic acid,l-ascorbate
CAS Number: 50-81-7
DESCRIPTION
What It Does: Ascorbic acid neutralizes free radicals, stimulates collagen production, inhibits melanin synthesis for a brighter complexion, and supports skin repair.
Why It's Used: It is used because it offers comprehensive antioxidant and brightening benefits supported by extensive clinical evidence. it is the most bioavailable form of vitamin c for topical application.
How It Works: As an antioxidant, it donates electrons to neutralize reactive oxygen species. it is an essential cofactor for the hydroxylation of proline and lysine in collagen synthesis. it inhibits tyrosinase, the enzyme responsible for melanin production, reducing hyperpigmentation.
Typically Found In: Vitamin c serums,brightening moisturizers,antioxidant formulations,spf products,eye creams
TECHNICAL DETAILS
Primary Category: Active ingredient โ vitamin c
Secondary Functions: Collagen booster,tyrosinase inhibitor,ph adjuster
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 5%โ20% (effective range: 10โ20%; ph must be below 3.5 for activity)
SOURCING & ETHICS
Vegan Status: Yes โ synthetically produced or corn/plant-derived
Halal Status: Yes
Source Notes: Commercially produced by reichstein synthesis or guangxi fermentation process from glucose. some plant-derived versions exist.
SKIN COMPATIBILITY
Irritancy Rating: 2/5 โ low to moderate; low ph formulations can cause initial tingling or stinging, especially at concentrations above 15%
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Acidic ph can irritate sensitive or compromised skin barriers. highly unstable โ oxidizes rapidly when exposed to air, light, and heat (turns orange/brown). use in the morning under spf.
Safe for Sensitive Skin: Use with caution โ start at lower concentrations (5โ10%). stabilized derivative forms (vitamin c derivatives) may be better tolerated.
SAFETY & COMPATIBILITY
Safety Profile: Very safe; well-studied. key concern is formulation stability, not safety. ewg hazard score: 1.
Works Well With: Vitamin e (tocopherol) โ synergistic antioxidant effect,ferulic acid โ stabilizing and boosting,spf,hyaluronic acid,niacinamide (use at different times if concentrations are high)
Avoid Combining With: Retinol (use at separate times โ ph incompatibility),benzoyl peroxide (oxidizes vitamin c),ahas/bhas (cumulative irritation risk)
SCIENTIFIC NOTE
L-ascorbic acid is the only form of vitamin c that is proven bioactive in skin at the molecular level. its instability (rapid oxidation) has driven development of numerous stable derivatives including ascorbyl glucoside, magnesium ascorbyl phosphate, and ascorbyl tetraisopalmitate.
Last Verified: Cosing database,cir safety assessment,pinnell et al. studies,journal of the american academy of dermatology
Primary Sources: 2026-03-12
Ferulic Acid
Common Name(s): 4-hydroxy-3-methoxycinnamic acid,coniferic acid
CAS Number: 1135-24-6
DESCRIPTION
What It Does: Doubles vitamin c and e efficacy through synergistic stabilization, providing superior photoprotection.
Why It's Used: Essential in vitamin c serums as the c+e+ferulic acid synergistic antioxidant trio that provides exceptional photoprotection โ a clinically proven combination.
How It Works: Phenolic structure provides direct free radical scavenging. also stabilizes l-ascorbic acid and tocopherol by donating hydrogen atoms to regenerate oxidized antioxidants. absorbs uv (290โ330nm) providing additional photoprotection.
Typically Found In: Vitamin c serums,antioxidant complexes,sunscreens,anti-aging products
TECHNICAL DETAILS
Primary Category: Active ingredient โ hydroxycinnamic acid antioxidant
Secondary Functions: Vitamin c synergist,uv absorber,antioxidant stabilizer
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.5%โ1%
SOURCING & ETHICS
Vegan Status: Yes โ plant-derived (wheat, rice bran, oats)
Halal Status: Yes
Source Notes: Extracted from ferulic acid-rich plant sources (wheat bran, rice bran, sweet corn) or synthetically produced.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Non-irritating; well-tolerated.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Excellent safety profile. ewg score: 1.
Works Well With: Vitamin c,vitamin e,ferulic acid,spf,other antioxidants
Avoid Combining With: No significant incompatibilities
SCIENTIFIC NOTE
Pinnell et al. demonstrated that the combination of 15% vitamin c + 1% vitamin e + 0.5% ferulic acid provides 8ร superior photoprotection to vitamin c alone. ferulic acid stabilizes ascorbic acid by donating electrons, preventing oxidative degradation.
Last Verified: Cosing database,pinnell et al. (2005) ce ferulic study,murray et al. antioxidant synergy
Primary Sources: 2026-03-12
Tapioca Starch
Common Name(s): Tapioca starch,cassava starch,manioc powder
CAS Number: 9005-25-8
DESCRIPTION
What It Does: Provides silky natural starch powder for oil absorption and talc-alternative conditioning.
Why It's Used: Versatile sustainable talc alternative from cassava โ tapioca starch's small granule size and silky feel make it a widely accepted natural talc replacement in clean beauty powder formulations.
How It Works: Tapioca starch granule (5-35ฮผm) provides oil absorption via capillary action in granule micropores. smooth starch surface provides silky application feel. biodegradable and cosmos-certified. good adhesion to skin from granule surface hydroxyl groups.
Typically Found In: Natural powders,foundation,talc-alternative products
TECHNICAL DETAILS
Primary Category: Functional ingredient โ tapioca starch powder
Secondary Functions: Skin conditioning
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 1%โ30%
SOURCING & ETHICS
Vegan Status: Yes โ from manihot esculenta (cassava) root
Halal Status: Yes
Source Notes: Commercially produced for cosmetic use. verify vegan/halal status with supplier.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Well-tolerated by most skin types.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Good safety profile at recommended concentrations. ewg score: 1โ2.
Works Well With: Standard skincare actives
Avoid Combining With: No known significant incompatibilities
SCIENTIFIC NOTE
Tapioca starch's dominance as a talc alternative in clean beauty reflects a size-property relationship: its 5-35ฮผm granule size bracket overlaps with talc's typical 1-20ฮผm range, providing similar optical and tactile properties (oil absorption, slip, soft focus) while offering the sustainability advantages of a rapidly renewable crop byproduct vs mined mineral talc.
Last Verified: Cosing database,cir safety assessment
Primary Sources: 2026-03-12