Mashka analyzes your skin and builds a personalized AM/PM routine with AI guidance.
Goal: Fade dark spots, protect against pollution, and boost glow.
If the liquid in the bottle turns dark brown or orange, it has oxidized (gone bad). Throw it away.
Mashka's Picks
The best vitamin C is the one you will actually use before sunscreen instead of letting it oxidize in a drawer.
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This category makes sense when your goal is brighter skin and slower buildup of pigment after breakouts.
Best for: Dullness, uneven tone, and post-acne marks.
Watch for: Pick a lower concentration if you know your skin reacts to acidic serums.
Vitamin C without sunscreen is an incomplete brightening plan because UV will keep re-triggering the same spots.
Best for: Anyone using vitamin C in the morning.
Watch for: Choose a texture you like enough to reapply when needed.
Beginners: 10-15%. Experienced users: 15-20%. Higher percentages are not always better and may irritate skin.
Vitamin C oxidizes when exposed to light, air, or heat. Store in a cool, dark place and replace if it changes color.
Vitamin C is an acid (L-ascorbic acid). Slight tingling is normal; burning is not.
You can, but it is most useful in the morning to protect against daily pollution.
No. It helps sunscreen work better but is not a shield on its own.
That is the natural smell of pure vitamin C (often with ferulic acid). It is normal.
Do not mix them in the same session. Use vitamin C in the morning and retinol at night.
It helps fade the dark red or brown spots left behind by acne.
Keep it in a cool, dark place. Some people refrigerate it to make it last longer.
Yes, but look for a lower concentration or a gentler derivative.