numbuzin No.5 Glutathione Vitamin Tone-up Sun Serum — Efficacy 4.4/5.0, Safety 3.8/5.0 | DemythSkin
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[ DemythSkin Verdict ]
numbuzin No.5 Glutathione Vitamin Tone-up Sun Serum

numbuzin No.5 Glutathione Vitamin Tone-up Sun Serum

SunscreenSun protection + brightening/tone-up
Efficacy
Strong
4.4 / 5.0
Safety
Mostly Safe
3.8 / 5.0
System Verdict
Solid chemical-mineral hybrid sunscreen with broad-spectrum protection and decent brightening actives, but dragged down by alcohol and low active concentrations. Efficacy score of 4.4 reflects excellent SPF50+ PA++++ filter blend (Titanium Dioxide + photostable chemicals like Tinosorb S/M and Uvinul A Plus covering full UVA/UVB), plus synergistic niacinamide (high position ~5-10%) and glutathione (1000ppm per ) for tone-up, but deducts for late-list actives like ascorbic acid/arbutin (positions 40+ likely <0.1%, minimal impact) and potential instability of pure Vitamin C in sunscreen pH/formula.
Active Ingredients Detected
S Tier: Gold StandardsHigh Clinical Proof | Skin-Transformative
Titanium DioxideEthylhexyl TriazoneDiethylamino Hydroxybenzoyl Hexyl BenzoateBis-Ethylhexyloxyphenol Methoxyphenyl TriazineAscorbic Acid
A Tier: Good BasicsProven Results
NiacinamideAlpha ArbutinTocopherol
B Tier: Supporting IngredientsPromising Ingredients
Dehydrated Alcohol
C Tier: Marketing IdolsHype | Limited or Weak Data
Glutathione
D Tier: Potential IrritantsBe Cautious
Terephthalylidene Dicamphorsulfonic Acid
What Each Ingredient Does
Titanium Dioxide
Physical UVB/UVA filter
Ethylhexyl Triazone
Chemical UVB filter
Terephthalylidene Dicamphorsulfonic Acid
Chemical UVB filter
Diethylamino Hydroxybenzoyl Hexyl Benzoate
Chemical UVA filter
Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine
Broad-spectrum UV filter
Niacinamide
Brightening barrier booster
Glutathione
Antioxidant brightener
Dehydrated Alcohol
Solvent drying agent
Ascorbic Acid
Vitamin C antioxidant
Alpha Arbutin
Tyrosinase inhibitor brightener
Tocopherol
Vitamin E antioxidant
Full Ingredient List (INCI)

Sea buckthorn water, water, diisopropyl sebacate, titanium dioxide (CI 77891), propanediol, butylene glycol, butylated salicylate, dibutyl adipate, ethylhexyl triazone, terephthalylidene dicamphorsulfonic acid, niacinamide, dehydrated alcohol, 1,2-hexanediol, tromethamine, dimethicone, sea buckthorn oil, caprylyl methicone, diethylamino hydroxybenzoyl hexyl benzoate, polymethylsilsesquioxane, polysilicone-15, isododecane, octyldodecaneol, diethylhexyl oxyphenol methoxyphenyl triazine, pentylene glycol, VP/eicosene copolymer, polyglyceryl-3 distearate, potassium cetyl phosphate, cetyl alcohol, glyceryl stearate, dimethicone/vinyl dimethicone crosspolymer, methicone, polyglyceryl-4 isostearate, hydroxyacetophenone, methylpropanediol, polyester-5, isopropyl titanium triisostearate, aluminum hydroxide, polyglyceryl-10 myristate, carbomer, glyceryl stearate citrate, adenosine, hydroxypropyl methylcellulose stearoxyether, sodium polyacryloyl dimethyl taurate, xanthan gum, glutathione, polyether-1, cetyl hydroxyethylcellulose, ethylhexylglycerin, xyloglucan, arginine, alpha arbutin, ascorbic acid, cyanocobalamin, panthenol, tocopherol, ubiquinone, hydroxypropyl cyclodextrin, glycerin, polyglyceryl-10 laurate, thioctic acid, hydrogenated lecithin, tremella fuciformis mushroom extract, potassium hydroxide.

Frequently Asked

Is numbuzin No.5 Glutathione Vitamin Tone-up Sun Serum worth it?

numbuzin No.5 Glutathione Vitamin Tone-up Sun Serum scores 4.4 out of 5.0 for efficacy (Strong) and 3.8 out of 5.0 for safety (Mostly Safe) on DemythSkin's independent ingredient analysis. Solid chemical-mineral hybrid sunscreen with broad-spectrum protection and decent brightening actives, but dragged down by alcohol and low active concentrations. Efficacy score of 4.4 reflects excellent SPF50+ PA++++ fil

What are the key active ingredients in numbuzin No.5 Glutathione Vitamin Tone-up Sun Serum?

numbuzin No.5 Glutathione Vitamin Tone-up Sun Serum contains these gold-standard actives with strong clinical evidence: Titanium Dioxide, Ethylhexyl Triazone, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Ascorbic Acid.

Does numbuzin No.5 Glutathione Vitamin Tone-up Sun Serum contain fragrance or known irritants?

DemythSkin flags these ingredients in numbuzin No.5 Glutathione Vitamin Tone-up Sun Serum as potential irritants: Terephthalylidene Dicamphorsulfonic Acid.

How is numbuzin No.5 Glutathione Vitamin Tone-up Sun Serum scored?

DemythSkin grades every product on two independent axes: efficacy (whether the ingredients have clinical evidence of working) and safety (irritation and sensitisation risk). Ingredients are classified S through D against a database of over 3,000 compounds. No brand pays for a score.

Analyze on DemythSkin →

Analysis last updated: 2026-05-03. DemythSkin is an independent ingredient analyzer. Scores are computed by a deterministic rubric from published clinical evidence — no brand pays for a score.