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
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DemythSkin is an independent ingredient analyzer. Scores are computed by a deterministic rubric from published clinical evidence — no brand pays for a score.