INNBEAUTY PROJECT Pro C Serum Brightening Solution with 15% Vitamin C + Ferulic Acid vs numbuzin No.5 Vitamin-Niacinamide Concentrated Pad
INNBEAUTY PROJECT Pro C Serum Brightening Solution with 15% Vitamin C + Ferulic Acid scores 9.7/9.8 vs numbuzin No.5 Vitamin-Niacinamide Concentrated Pad at 8.9/9.8. INNBEAUTY PROJECT Pro C Serum Brightening Solution with 15% Vitamin C + Ferulic Acid wins for hydration.
Head to head

Pro C Serum Brightening Solution with 15% Vitamin C + Ferulic Acid
No.5 Vitamin-Niacinamide Concentrated Pad
Score comparison
INNBEAUTY PROJECT Pro C Serum Brightening Solution with 15% Vitamin C + Ferulic Acid edges ahead, winning 2 of 5 attributes.
Scores last verified: July 2026
Attribute battle
Hydration Efficacy
numbuzin WINSIrritation Risk
TIEActive Ingredient Strength
TIEIngredient Transparency
numbuzin WINSFormulation Safety
TIEIngredient face-off
17% overlapOnly in INNBEAUTY PROJECT Pro C Serum Brightening Solution with 15% Vitamin C + Ferulic Acid
35 unique
Shared ingredients
7 in common
Only in numbuzin No.5 Vitamin-Niacinamide Concentrated Pad
18 unique
Why INNBEAUTY PROJECT Pro C Serum Brightening Solution with 15% Vitamin C + Ferulic Acid comes out ahead
Where INNBEAUTY PROJECT Pro C Serum Brightening Solution with 15% Vitamin C + Ferulic Acid really shines is hydration efficacy, scoring 6.3 compared to numbuzin No.5 Vitamin-Niacinamide Concentrated Pad's 7.1. With Propanediol, Mannitol, and Panthenol in its top ingredients, INNBEAUTY PROJECT Pro C Serum Brightening Solution with 15% Vitamin C + Ferulic Acid delivers stronger moisture-binding capability.
Ingredient Transparency is another area of separation. numbuzin No.5 Vitamin-Niacinamide Concentrated Pad scores 8.8 here versus 8.5 for INNBEAUTY PROJECT Pro C Serum Brightening Solution with 15% Vitamin C + Ferulic Acid. That difference comes down to how each formula is built — the ingredient list tells the story.
INNBEAUTY PROJECT Pro C Serum Brightening Solution with 15% Vitamin C + Ferulic Acid brings Tetrahexyldecyl Ascorbate, Niacinamide, and Ascorbic Acid as actives, while numbuzin No.5 Vitamin-Niacinamide Concentrated Pad relies on Niacinamide, Ascorbyl Glucoside, and Ascorbic Acid. Both approaches have merit, but the positioning and supporting ingredients make the difference.
Best for your skin type
INNBEAUTY PROJECT Pro C Serum Brightening Solution with 15% Vitamin C + Ferulic Acid is better if you have
- Sensitive skin — the low-irritation formula keeps things gentle
- Targeting specific concerns like aging or uneven tone — Tetrahexyldecyl Ascorbate does the heavy lifting
- Anyone who prefers clean, well-vetted formulations
numbuzin No.5 Vitamin-Niacinamide Concentrated Pad is better if you have
- Sensitive skin — the low-irritation formula keeps things gentle
- Dry or dehydrated skin that craves moisture, thanks to Butylene Glycol
- Targeting specific concerns like aging or uneven tone — Niacinamide does the heavy lifting
Value comparison
At premium pricing with a score of 9.7, INNBEAUTY PROJECT Pro C Serum Brightening Solution with 15% Vitamin C + Ferulic Acid delivers strong value. numbuzin No.5 Vitamin-Niacinamide Concentrated Pad sits at the mid-range level with a 8.9 score — the extra cost doesn't translate to better scores here.
Our verdict
INNBEAUTY PROJECT Pro C Serum Brightening Solution with 15% Vitamin C + Ferulic Acid edges ahead with a slightly stronger formulation, but numbuzin No.5 Vitamin-Niacinamide Concentrated Pad is still a solid pick.

Frequently asked questions
Which is better: INNBEAUTY PROJECT Pro C Serum Brightening Solution with 15% Vitamin C + Ferulic Acid or numbuzin No.5 Vitamin-Niacinamide Concentrated Pad?
Based on ingredient analysis, INNBEAUTY PROJECT Pro C Serum Brightening Solution with 15% Vitamin C + Ferulic Acid scores higher overall. See the full score breakdown above for details on each attribute.
Do INNBEAUTY PROJECT Pro C Serum Brightening Solution with 15% Vitamin C + Ferulic Acid and numbuzin No.5 Vitamin-Niacinamide Concentrated Pad share ingredients?
Yes, they share common ingredients. Check the ingredient face-off section above for a detailed comparison.
What's the main difference between INNBEAUTY PROJECT Pro C Serum Brightening Solution with 15% Vitamin C + Ferulic Acid and numbuzin No.5 Vitamin-Niacinamide Concentrated Pad?
The key differences are in their active ingredients and formulation approach. Check the attribute battle above for a detailed breakdown.