1 / 8DERMDOC 4% Niacinamide Ultra Violet Brightening Sunscreen : Ingredients & Skin Analysis.
Contains 4% brightening niacinamide.
Skin Type Match
Balancing · Photounstable · Sensitizing
- Natural balanced finish
- Refines skin texture
- Lightweight and breathable
- Severe UV photoinstability
- High irritation risk
- Severe eye sting
Performance Scores
SPF Level
Excellent
SPF Level
The input data confirms a manufacturer claim of SPF 50, supported by potent UVB filters like Octinoxate and Oxybenzone.
Broad Spectrum
Poor
Broad Spectrum
Avobenzone is the only dedicated UVA I filter (340-400 nm) present in functional amounts, fitting the criteria for a weak and unstabilized broad-spectrum system.
Sweat Resistance
Poor
Sweat Resistance
The ingredient list includes Dimethicone, Polyacrylate-13, and Polyisobutene, which act as film-formers, but there is no 40- or 80-minute testing claim from the manufacturer.
Photo Stability
Poor
Photo Stability
Extensive photobiology literature confirms that combining unstabilized Avobenzone and Octinoxate leads to a bimolecular photoreaction that rapidly destroys both filters under UV exposure.
Visible Light
Poor
Visible Light
Total absence of iron oxide color indices (e.g., CI 77491, CI 77492, CI 77499) in the provided ingredient list.
Irritation Risk
High Risk
Irritation Risk
Dermatological literature frequently cites oxybenzone as the most common chemical UV filter responsible for photoallergic contact dermatitis.
Pore Clogging
Low Risk
Pore Clogging
Dermatological comedogenicity databases and clinical assessments rate the primary vehicle ingredients at 0-1/5, while late-list emulsifiers like glyceryl stearate cap at a 2/5 in standardized human and rabbit ear assays.
White Cast
Low Risk
White Cast
Low concentrations of un-tinted mineral filters in a primarily chemical-based formulation typically exhibit negligible reflectance on Fitzpatrick I-V skin tones.
Ingredients Analysis
Active Filters
Octinoxate UVB
Studies indicate potential estrogenic and thyroid disrupting activity in animal models and human cell lines.
Oxybenzone UVB / UVA II
Clinical trials demonstrate that single applications lead to blood concentrations vastly exceeding safety thresholds and remaining detectable for weeks [1.1].
Avobenzone UVA I / UVA II
Rapidly degrades under UV exposure losing significant UVA protection capacity unless stabilized by other filters.
Titanium Dioxide UVB / UVA II
Classified as a possible human carcinogen if inhaled making spray and powder formulations a potential risk while dermal application remains safe
Key Inactive Ingredients
Phenoxyethanol Preservative
Generally well tolerated but can cause contact dermatitis or skin irritation in rare cases, particularly in sensitive individuals.
Ethylhexylglycerin Preservative
Recognized as a rare but emerging cause of allergic contact dermatitis, particularly in leave-on cosmetic products.
Ethoxydiglycol Solvent
Restricted in the EU to specific maximum concentrations and banned in eye and oral products to prevent potential kidney damage [2.1].
Polyacrylate-13 Film Former
May contain trace amounts of residual acrylamide from manufacturing but industry practices and regulatory limits keep it at safe levels.
Polysorbate 20 Surfactant
As an ethoxylated ingredient, it may contain trace amounts of 1,4 dioxane and ethylene oxide, which are potential carcinogens linked to the manufacturing process.
PEG-40 Hydrogenated Castor Oil Surfactant
As an ethoxylated ingredient it carries a risk of trace contamination with dioxane and ethylene oxide which are potential carcinogens produced during the manufacturing process [1.4.7].
Ext. D&C Violet No. 2 Colorant
Prohibited by both the FDA and EU for use in lip products, eye area cosmetics, and any products applied to mucous membranes.
Disodium EDTA Chelating Agent
Poorly biodegradable in the environment and can accumulate in aquatic ecosystems where it may mobilize heavy metals.
D&C Red No. 33 Colorant
The FDA prohibits the use of this colorant in cosmetic products intended for application in the area of the eye.