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Skingenium
C
Drunk Elephant

C-Firma Day Serum

SerumsSerum$80–$90

A potent vitamin C serum with ferulic acid and vitamin E that brightens, firms, and improves the appearance of skin.

Where to buy
StorePriceBuy
Amazon$80.00Buy C-Firma Day Serum on Amazon
Shopee$90.00Buy C-Firma Day Serum on Shopee
Sephora—Buy C-Firma Day Serum on Sephora

Prices are checked periodically and may have changed. Skingenium may earn a commission on purchases made through these links — it never affects which products we show or how they score.

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Ingredients (10)

Listed in order of concentration (highest first). Click any ingredient to learn more.

1Vitamin C2Sodium Ascorbyl Phosphate3Vitamin E4Ferulic Acid5Squalane6Glycerin7Caprylic/Capric Triglyceride8Adenosine9Panthenol10Allantoin
Formulation
Fragrance free
Yes
Alcohol free
Yes
Essential oil free
Yes
Silicone free
Yes
Oil free
No
Sulfate free
Yes
Non-comedogenic
Yes
Cruelty free
Unknown
Vegan
Yes
Fungal acne safe
No

Price / amount analysis

How much product you get per dollar, against 16 other serums with a listed size. Anything above the dotted line gives you more ml for your money than C-Firma Day Serum does.

  • This product
  • Better value
  • Worse value
  • Value threshold
0306090120$0$25$50$75$100Price (USD)Amount (ml)Hyaluronic Acid 2% + B5 ($7 · 30 ml) Ascorbic Acid 8% + Alpha Arbutin 2% ($9 · 30 ml) Brighter Daze Brightening Serum ($7 · 30 ml) Niacinamide 10% + Zinc 1% ($6 · 30 ml) Retinol 0.5% in Squalane ($7 · 30 ml)Ascorbic Acid 8% + Alpha Arbutin 2% ($9 · 30 ml) Hyaluronic Acid 2% + B5 ($7 · 30 ml) Brighter Daze Brightening Serum ($7 · 30 ml) Retinol 0.5% in Squalane ($7 · 30 ml)C15 Super Booster ($49 · 20 ml)Hyalu B5 Serum ($38 · 30 ml)B-Hydra Intensive Hydration Serum ($48 · 50 ml)FAB Skin Lab Retinol Serum 0.25% ($58 · 30 ml)Brighter Daze Brightening Serum ($7 · 30 ml) Hyaluronic Acid 2% + B5 ($7 · 30 ml) Ascorbic Acid 8% + Alpha Arbutin 2% ($9 · 30 ml) Niacinamide 10% + Zinc 1% ($6 · 30 ml) Retinol 0.5% in Squalane ($7 · 30 ml)Brightening Crystal Serum ($25 · 50 ml)Niacinamide 10% + Zinc 1% ($6 · 30 ml) Hyaluronic Acid 2% + B5 ($7 · 30 ml) Brighter Daze Brightening Serum ($7 · 30 ml) Retinol 0.5% in Squalane ($7 · 30 ml)Retinol 0.5% in Squalane ($7 · 30 ml) Hyaluronic Acid 2% + B5 ($7 · 30 ml) Ascorbic Acid 8% + Alpha Arbutin 2% ($9 · 30 ml) Brighter Daze Brightening Serum ($7 · 30 ml) Niacinamide 10% + Zinc 1% ($6 · 30 ml)CeraVe Hydrating Hyaluronic Acid Serum ($15 · 30 ml)CeraVe Resurfacing Retinol Serum ($18 · 30 ml)Power Barrier Serum ($4 · 20 ml)Advanced Snail 96 Mucin Power Essence ($22 · 100 ml)Rapid Wrinkle Repair Retinol Face Ser… ($22 · 30 ml)Vitamin C AOX Glowing Serum ($25 · 30 ml)C-Firma Day Serum ($80 · 30 ml)Hyaluronic Acid 2% + B5 ($7 · 30 ml)Ascorbic Acid 8% + Alpha Arbutin 2% ($9 · 30 ml)Brighter Daze Brightening Serum ($7 · 30 ml)Niacinamide 10% + Zinc 1% ($6 · 30 ml)Retinol 0.5% in Squalane ($7 · 30 ml)Ascorbic Acid 8% + Alpha Arbutin 2% ($9 · 30 ml)Hyaluronic Acid 2% + B5 ($7 · 30 ml)Brighter Daze Brightening Serum ($7 · 30 ml)Retinol 0.5% in Squalane ($7 · 30 ml)C15 Super Booster ($49 · 20 ml)Hyalu B5 Serum ($38 · 30 ml)B-Hydra Intensive Hydration Serum ($48 · 50 ml)FAB Skin Lab Retinol Serum 0.25% ($58 · 30 ml)Brighter Daze Brightening Serum ($7 · 30 ml)Hyaluronic Acid 2% + B5 ($7 · 30 ml)Ascorbic Acid 8% + Alpha Arbutin 2% ($9 · 30 ml)Niacinamide 10% + Zinc 1% ($6 · 30 ml)Retinol 0.5% in Squalane ($7 · 30 ml)Brightening Crystal Serum ($25 · 50 ml)Niacinamide 10% + Zinc 1% ($6 · 30 ml)Hyaluronic Acid 2% + B5 ($7 · 30 ml)Brighter Daze Brightening Serum ($7 · 30 ml)Retinol 0.5% in Squalane ($7 · 30 ml)Retinol 0.5% in Squalane ($7 · 30 ml)Hyaluronic Acid 2% + B5 ($7 · 30 ml)Ascorbic Acid 8% + Alpha Arbutin 2% ($9 · 30 ml)Brighter Daze Brightening Serum ($7 · 30 ml)Niacinamide 10% + Zinc 1% ($6 · 30 ml)CeraVe Hydrating Hyaluronic Acid Serum ($15 · 30 ml)CeraVe Resurfacing Retinol Serum ($18 · 30 ml)Power Barrier Serum ($4 · 20 ml)Advanced Snail 96 Mucin Power Essence ($22 · 100 ml)Rapid Wrinkle Repair Retinol Face Ser… ($22 · 30 ml)Vitamin C AOX Glowing Serum ($25 · 30 ml)C-Firma Day Serum ($80 · 30 ml)

C-Firma Day Serum gives you 0.4 ml per $1.

  • 16 of 16 comparable serums offer more ml per dollar; 0 offer less.
  • Best value in this category: Niacinamide 10% + Zinc 1% at 5 ml per $1 ($6 for 30 ml).

Amount per dollar is not the whole story — concentration, formulation and how much you use per application all matter. This compares size and price, nothing else.

View as table
Price, amount and amount-per-dollar for Serums products
ProductPriceAmountPer $1Value
Niacinamide 10% + Zinc 1%$630 ml5 ml per $1Better value
Power Barrier Serum$420 ml5 ml per $1Better value
Advanced Snail 96 Mucin Power Essence$22100 ml4.5 ml per $1Better value
Hyaluronic Acid 2% + B5$730 ml4.3 ml per $1Better value
Brighter Daze Brightening Serum$730 ml4.3 ml per $1Better value
Retinol 0.5% in Squalane$730 ml4.3 ml per $1Better value
Ascorbic Acid 8% + Alpha Arbutin 2%$930 ml3.3 ml per $1Better value
Brightening Crystal Serum$2550 ml2 ml per $1Better value
CeraVe Hydrating Hyaluronic Acid Serum$1530 ml2 ml per $1Better value
CeraVe Resurfacing Retinol Serum$1830 ml1.7 ml per $1Better value
Rapid Wrinkle Repair Retinol Face Serum$2230 ml1.4 ml per $1Better value
Vitamin C AOX Glowing Serum$2530 ml1.2 ml per $1Better value
B-Hydra Intensive Hydration Serum$4850 ml1 ml per $1Better value
Hyalu B5 Serum$3830 ml0.8 ml per $1Better value
FAB Skin Lab Retinol Serum 0.25%$5830 ml0.5 ml per $1Better value
C15 Super Booster$4920 ml0.4 ml per $1Better value
C-Firma Day Serum$8030 ml0.4 ml per $1This product

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