Riyo Herbs
Riyo Herbs Vitamin C Face Serum for Glowing Skin with Hyaluronic Acid, Cherry, & Cucumber
Riyo Herbs Vitamin C Face Serum for Glowing Skin with Hyaluronic Acid, Cherry, & Cucumber
Riyo Herbs
riyo-herbs-vitamin-c-face-serum-for-glowing-skin-with-hyaluronic-acid-cherry-cucumber
Serum
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WHAT IS IT?
Face Serum with 11 ingredients
FEATURES
20% vitamin C, brightens and nourishes skin, reduces dark spots and pigmentation, contains cherry, cucumber and orange oil extract, repairs dead skin cells, gives radiant glow, contains glycolic acid to relieve acne, hyaluronic acid for hydration and wrinkle prevention, niacinamide to help pigmentation
BEST FOR
sensitive
CHECKS
No sulfates, No parabens, No animal derivatives, No artificial colours
Who Is It For?
All Genders Adult Age Range Not SpecifiedWhat Does It Help With?
Brightening Pigmentation Acne Relief Hydration Wrinkle Prevention Collagen Boost Skin Cell Repair Glow EnhancementBudget
Affordable (under $30)How To Use
Which routine should it be used in?
Instructions:
Key Information
What Riyo Herbs Says
Product Description:
Riyo Herbs Vitamin C Face Serum is formulated with effective vitamin C (ethyl ascorbic acid) coupled with the benefits of vitamin E and hyaluronic acid that brightens and nourishes your skin. This is an effective combination that boosts collagen, repairs skin cells, pigmentation and improves complexion as well as skin luminosity. The face serum contains 20% vitamin C to help brighten and nourish the skin. Reduces the appearance of dark spots and pigmentation. Enriched with the goodness of cherry, cucumber and orange oil extract. Deeply penetrates and repairs dead skin cells. Gives radiant glow. Glycolic Acid relieves acne. Hyaluronic acid gives hydration and prevents wrinkles. Niacinamide helps in pigmentation.
About the Brand:
Ingredients Overview
Ingredients List
aqua,ethyl-ascorbic-acid,arbutin,hyaluronic-acid,niacinamide,glycolic-acid,trehalose,tocopherol,cherry-extract,cucumber-extract,zemea,orange-oil
Key Ingredients
ethyl ascorbic acid, tocopherol, hyaluronic acid, niacinamide, glycolic acid, cherry extract, cucumber extract, orange oil
Ingredients Details
Arbutin
Common Name(s): Arbutin,cosmetic active,functional ingredient
CAS Number: N/a
DESCRIPTION
What It Does: Delivers characteristic cosmetic function โ skin conditioning, protection, preservation, or active biological benefit โ at recommended use concentration.
Why It's Used: Selected for its functional contribution and formulation compatibility โ supported by cosmetic science literature and regulatory safety assessment.
How It Works: Works through the mechanism of its molecular class โ physicochemical interaction with the formulation or biological interaction with skin proteins, lipids, or receptors as documented in peer-reviewed literature.
Typically Found In: Skin care formulations
TECHNICAL DETAILS
Primary Category: Active ingredient โ cosmetic active
Secondary Functions: Skin conditioning
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.1%โ10%
SOURCING & ETHICS
Vegan Status: Conditional
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
Arbutin delivers documented functional benefit with an established safety profile within the cosmetic regulatory framework (cosing eu, cir usa).
Last Verified: Cosing database,arbutin technical literature
Primary Sources: 2026-03-12
Niacinamide
Common Name(s): Vitamin b3,nicotinamide,pyridine-3-carboxamide
CAS Number: 98-92-0
DESCRIPTION
What It Does: Niacinamide strengthens the skin barrier, reduces visible pore size, regulates sebum production, fades dark spots, and improves skin texture and tone.
Why It's Used: It is used because it addresses multiple skin concerns at once without irritation, making it suitable for all skin types. it is stable in formulations and pairs well with most other actives.
How It Works: Niacinamide inhibits the transfer of melanosomes (pigment packets) to skin cells, reducing hyperpigmentation. it also stimulates ceramide synthesis to strengthen the skin barrier and reduces inflammation by modulating cytokine activity.
Typically Found In: Serums,moisturizers,toners,cleansers,eye creams,sunscreens,primers
TECHNICAL DETAILS
Primary Category: Active ingredient โ vitamin
Secondary Functions: Barrier repair,brightening,anti-inflammatory
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 2%โ10% (typical: 5%; higher concentrations may cause flushing in some individuals)
SOURCING & ETHICS
Vegan Status: Yes โ synthetically produced
Halal Status: Yes โ synthetic origin
Source Notes: Commercially produced via synthesis from nicotinic acid or 3-cyanopyridine. no animal-derived sources used in cosmetic-grade niacinamide.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low; concentrations above 10% may cause temporary flushing in sensitive individuals
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: At concentrations >10%, some users experience niacin flush (transient redness/tingling). generally very well-tolerated.
Safe for Sensitive Skin: Yes โ one of the best-tolerated actives for sensitive skin
SAFETY & COMPATIBILITY
Safety Profile: Extensively studied and considered very safe. ewg hazard score: 1. no significant systemic toxicity concerns at topical concentrations.
Works Well With: Retinol,peptides,ahas/bhas,hyaluronic acid,ceramides,zinc,vitamin c,spf
Avoid Combining With: High concentrations of vitamin c (ascorbic acid) may theoretically convert to niacin โ use at different times if using pure l-ascorbic acid above 15%
SCIENTIFIC NOTE
Niacinamide is a precursor to nad+ and nadp+, coenzymes vital to cellular energy metabolism. its benefits for dna repair and mitochondrial function make it a key ingredient in anti-aging strategies.
Last Verified: Cosing database,cir safety assessment,ewg skin deep,pubmed clinical studies
Primary Sources: 2026-03-12
Tocopherol
Common Name(s): Vitamin e,alpha-tocopherol,d-alpha-tocopherol,(+)-alpha-tocopherol
CAS Number: 59-02-9
DESCRIPTION
What It Does: Tocopherol neutralizes free radicals that damage skin cells, protects cell membranes from lipid peroxidation, moisturizes, and helps maintain a healthy skin barrier.
Why It's Used: It is used as both a skin-active antioxidant and a formulation stabilizer (preventing oxidation of other ingredients). it has decades of safety and efficacy evidence and works synergistically with vitamin c.
How It Works: As a chain-breaking antioxidant, tocopherol donates hydrogen atoms to interrupt lipid peroxidation chain reactions. it is regenerated by vitamin c (ascorbic acid) in the vitamins c+e antioxidant cycle, creating a more durable antioxidant defense.
Typically Found In: Moisturizers,serums,oils,sunscreens,eye creams,lip balms,antioxidant formulations,haircare products
TECHNICAL DETAILS
Primary Category: Active ingredient โ antioxidant/vitamin e
Secondary Functions: Emollient,formulation stabilizer,barrier support
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.1%โ1% (typical: 0.1โ0.5% as active; higher as formulation antioxidant)
SOURCING & ETHICS
Vegan Status: Yes โ plant-derived (soybean, sunflower, wheat germ oil) or synthetic
Halal Status: Yes โ plant-derived or synthetic
Source Notes: Natural d-alpha-tocopherol is derived from plant oils and is more bioactive. synthetic dl-alpha-tocopherol is less expensive. tocopherol acetate (tocopheryl acetate) is the more stable ester form.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low; rare contact sensitivity reported
Comedogenicity Rating: 2/5 โ mildly comedogenic at higher concentrations; formulation-dependent
Sensitivity Concerns: A small percentage of people report contact sensitization to tocopherol, particularly with leave-on products. comedogenicity risk is higher in oil-heavy formulations.
Safe for Sensitive Skin: Generally yes; perform patch test if history of vitamin e sensitivity
SAFETY & COMPATIBILITY
Safety Profile: Very safe; widely used. ewg hazard score: 2โ3 (depending on concentration). no significant systemic concerns from topical use.
Works Well With: Ascorbic acid (vitamin c) โ synergistic antioxidant pair,ferulic acid โ stabilizes and boosts both c and e,ceramides,spf,retinol
Avoid Combining With: Very high concentrations of benzoyl peroxide may oxidize tocopherol; potential comedogenicity concerns in acne-prone skin when in heavy oil bases
SCIENTIFIC NOTE
The combination of vitamin c, vitamin e, and ferulic acid (the 'ce ferulic' formulation) provides fourfold photoprotection against uv-induced free radical damage โ a synergy documented in landmark research by pinnell et al.
Last Verified: Cosing database,cir safety assessment,pinnell et al. (2005) journal of investigative dermatology,efsa panel on food additives
Primary Sources: 2026-03-12
Trehalose
Common Name(s): Alpha,alpha-trehalose,mycose
CAS Number: 99-20-7
DESCRIPTION
What It Does: Provides superior moisture retention under dehydrating conditions โ uniquely protective in extreme environments.
Why It's Used: Premium humectant for formulations targeting dehydration, environmental stress protection, and dry/mature skin hydration.
How It Works: Forms a protective glassy matrix that replaces water molecules around proteins and cell membranes during dehydration stress, preventing protein denaturation and membrane damage. stronger water binding than sucrose or glucose.
Typically Found In: Premium moisturizers,protective barrier formulas,anti-aging products
TECHNICAL DETAILS
Primary Category: Active ingredient โ anhydrobiotic sugar / humectant
Secondary Functions: Stress protection,barrier support,cryoprotectant
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 1%โ10%
SOURCING & ETHICS
Vegan Status: Yes โ fermentation-derived or from yeast
Halal Status: Yes
Source Notes: Produced by yeast fermentation or enzymatic conversion of starch. available as anhydrous or dihydrate form.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Non-irritating; exceptionally well-tolerated; endogenous to many organisms.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Excellent safety profile. ewg score: 1.
Works Well With: Ceramides,emollients,occlusives,glycerin,hyaluronic acid
Avoid Combining With: No significant incompatibilities
SCIENTIFIC NOTE
Trehalose's unique ability to form an amorphous glassy matrix during dehydration (replacing water molecules) explains the survival of tardigrades and resurrection plants. this property translates to exceptional skin protection under environmental dehydration stress.
Last Verified: Cosing database,crowe et al. trehalose anhydrobiosis review,cir safety assessment
Primary Sources: 2026-03-12