11
Shared Ingredients
Curology Custom Formula (Tretinoin 0.01% Azelaic acid 2% Niacinamide 4%) vs Curology Custom Serum (Niacinamide 4%, Clindamycin 1%, Azelaic 4%)
Comparing Curology Custom Formula (Tretinoin 0.01% Azelaic acid 2% Niacinamide 4%) versus Curology Custom Serum (Niacinamide 4%, Clindamycin 1%, Azelaic 4%) — shared ingredients, unique components, comedogenic & irritancy ratings and unique benefits.
Comparison Overview
Product 1
Curology Custom Formula (Tretinoin 0.01% Azelaic acid 2% Niacinamide 4%)
vs
Product 2
Curology Custom Serum (Niacinamide 4%, Clindamycin 1%, Azelaic 4%)
3
Unique to Curology Custom Formula (Tretinoin 0.01% Azelaic acid 2% Niacinamide 4%)
2
Unique to Curology Custom Serum (Niacinamide 4%, Clindamycin 1%, Azelaic 4%)
Neither product contains highly comedogenic ingredients (rating ≥ 3), making both suitable for acne-prone skin. Curology Custom Serum (Niacinamide 4%, Clindamycin 1%, Azelaic 4%) scores lower on irritancy, which may suit sensitive skin better. Both products share 11 ingredients in common. Curology Custom Formula (Tretinoin 0.01% Azelaic acid 2% Niacinamide 4%) has 3 unique ingredients while Curology Custom Serum (Niacinamide 4%, Clindamycin 1%, Azelaic 4%) has 2.
Skin Safety Profile
0%
Comedogenic
7 rated
93%
Safe
14 rated
29%
Irritant
14 rated
Based on 14 rated ingredient s
0%
Comedogenic
7 rated
92%
Safe
13 rated
23%
Irritant
13 rated
Based on 13 rated ingredient s
Product Benefits & Effects
✓Positive — Beneficial effects !Caution — Monitor closely
Custom Formula (Tretinoin 0.01% Azelaic acid 2% Niacinamide 4%) Benefits
✓Has skin-brightening properties✓Reduces dark spots!May cause irritation for some skin types✓Redness Reducing!May Worsen Oily Skin for some skin types✓Good For Oily Skin✓Acne Fighting✓Has Anti-aging properties
Custom Serum (Niacinamide 4%, Clindamycin 1%, Azelaic 4%) Benefits
✓Acne Fighting✓Has skin-brightening properties✓Reduces dark spots✓Redness Reducing!May Worsen Oily Skin for some skin types✓Good For Oily Skin
Ingredient Analysis Matrix
Scale 1 2 3 4 5 low → high
C = Comedogenic S = Safety risk IR = Irritancy
Shared Ingredients (11)
1
Ingredients — Unique to Curology Custom Formula (Tretinoin 0.01% Azelaic acid 2% Niacinamide 4%)
2
Ingredients — Unique to Curology Custom Serum (Niacinamide 4%, Clindamycin 1%, Azelaic 4%)
Frequently Asked Questions
Is Curology Custom Formula (Tretinoin 0.01% Azelaic acid 2% Niacinamide 4%) better than Curology Custom Serum (Niacinamide 4%, Clindamycin 1%, Azelaic 4%) for sensitive skin?
By comparing Custom Formula (Tretinoin 0.01% Azelaic acid 2% Niacinamide 4%) and Custom Serum (Niacinamide 4%, Clindamycin 1%, Azelaic 4%) side-by-side, you can identify which product has fewer irritants and a better safety profile for sensitive skin. Check the irritancy ratings in the comparison matrix above.
Which product, Custom Formula (Tretinoin 0.01% Azelaic acid 2% Niacinamide 4%) or Custom Serum (Niacinamide 4%, Clindamycin 1%, Azelaic 4%), is safer for acne-prone skin?
The comparison tool highlights comedogenic (pore-clogging) ingredients in both Custom Formula (Tretinoin 0.01% Azelaic acid 2% Niacinamide 4%) and Custom Serum (Niacinamide 4%, Clindamycin 1%, Azelaic 4%). Review the comedogenic ratings above to see which formulation is less likely to cause breakouts.
Do Custom Formula (Tretinoin 0.01% Azelaic acid 2% Niacinamide 4%) and Custom Serum (Niacinamide 4%, Clindamycin 1%, Azelaic 4%) share any ingredients?
Our ingredient analysis matrix lists all shared ingredients as well as those unique to either Custom Formula (Tretinoin 0.01% Azelaic acid 2% Niacinamide 4%) or Custom Serum (Niacinamide 4%, Clindamycin 1%, Azelaic 4%).
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