Cos De BAHA VM Vitamin C MSM Serum — Efficacy 4.3/5.0, Safety 4.8/5.0 | DemythSkin
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[ DemythSkin Verdict ]
Cos De BAHA VM Vitamin C MSM Serum

Cos De BAHA VM Vitamin C MSM Serum

SerumAcne / Oil Control
Efficacy
Strong
4.3 / 5.0
Safety
Excellent
4.8 / 5.0
System Verdict
This is a thoughtfully formulated, gentle antioxidant and anti-acne serum, but it’s a mild SAP-based brightener, not a heavy-hitting vitamin C treatment. The efficacy score sits in the upper mid-range because Sodium Ascorbyl Phosphate (SAP) is present at an estimated ~4–6% (supported by independent concentration analysis) which is solid for anti-acne and antioxidant benefits but inherently weaker for deep pigment correction than S Tier L-ascorbic acid, and the aloe–humectant base plus ferulic acid and tocopheryl acetate give nice A Tier antioxidant and hydration support without any obvious pH or stability red flags. The score is held back from S Tier mainly because SAP is a relatively weak brightening vitamin C derivative, the formula lacks strong dedicated brightening co-actives (like alpha arbutin, tranexamic acid, or high-dose niacinamide), and we have no evidence of a low-pH system specifically optimized for maximal SAP activity.
Active Ingredients Detected
S Tier: Gold StandardsHigh Clinical Proof | Skin-Transformative
Sodium Ascorbyl Phosphate
A Tier: Good BasicsProven Results
Aloe Barbadensis Leaf ExtractBetaineHydrogenated LecithinTocopheryl AcetateFerulic AcidAllantoinSodium Hyaluronate
B Tier: Supporting IngredientsPromising Ingredients
PropanediolGlycereth-26Dimethyl Sulfone (MSM)1,2-HexanediolDipotassium GlycyrrhizateHydroxyethylcelluloseXanthan GumCitric AcidCamellia Sinensis Leaf Extract
C Tier: Marketing IdolsHype | Limited or Weak Data
Sambucus Nigra Flower ExtractMomordica Charantia Fruit ExtractLeontopodium Alpinum Extract
Analyze on DemythSkin

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