Compare Products: Deep Vita C Capsule Cream vs B3 Nice 10% Niacinamide Serum

Medicube

Deep Vita C Capsule Cream

Mid-range
$29 / 55ml — $0.53/ml
Sunday Riley

B3 Nice 10% Niacinamide Serum

Premium10%
$65 / 30ml — $2.17/ml

Who It's Designed For

Medicube
  • Those seeking a vitamin C cream with interactive capsule texture
  • Users who want multiple brightening actives in one product
  • People looking for sea buckthorn-based hydration
  • Those who enjoy K-beauty innovation in texture
  • Users targeting dark spots and uneven tone
Sunday Riley
  • Those seeking an antioxidant-rich niacinamide treatment
  • Users who want botanical anti-inflammatory ingredients alongside niacinamide
  • People addressing post-acne dark spots and uneven tone
  • Those who prefer prestige skincare with complex formulations
  • Users comfortable with light synthetic fragrance

Key Ingredients

Medicube

50% Sea Buckthorn Water, 5% Niacinamide, Pure Vitamin C (Sodium Ascorbyl Phosphate), Ferulic Acid, 5 Vitamin C Derivatives

Sunday Riley

Niacinamide (10%), Brightenyl (Diglucosyl Gallic Acid), Trans-Resveratrol, EGCG (Green Tea), Centella Asiatica

Product Composition

9% similarity (7 ingredients in common)

Shared Ingredients
glycerinwaterniacinamideammonium acryloyldimethyltaurate/vp copolymerethylhexylglycerinfragrancepentylene glycol
Only in Medicube (45)
hippophae rhamnoides waterbutylene glycol12-hexanediolmethylpropanediolpropanedioldipropylene glycolcaprylic/capric triglycerideglycereth-26ethylhexyl palmitatecetearyl alcoholargininecetearyl olivatesorbitan olivatehelianthus annuus (sunflower) seed oilglycine soja (soybean) oilbixa orellana seed oiltocopherolpolyglyceryl-10 lauratesimethiconecarbomerhydrogenated lecithinpolyglyceryl-10 stearatepanthenolsodium ascorbyl phosphatefolic acidpyridoxinebiotincyanocobalaminthiamine hclbeta-caroteneriboflavinlinoleic acidpolyacrylate-13polyisobutenepolysorbate 20sorbitan isostearateadenosinedisodium edtaglyceryl stearatehydrolyzed sclerotium gumgluconolactonesodium hyaluronateascorbyl propyl hyaluronatealpha-arbutin
Only in Sunday Riley (28)
phenyl trimethiconeoctyldodecanolresveratroldiglucosyl gallic acidasiaticosidemadecassosideepigallocatechin gallatyl glucosideboswellia serrata resin extractcurcuma longa (turmeric) root extractocimum basilicum (basil) flower/leaf extractocimum sanctum leaf extractaloe barbadensis flower extractsolanum melongena (eggplant) fruit extractcoccinia indica fruit extractbetainecorallina officinalis extractmelia azadirachta flower extractmelia azadirachta leaf extractpeg-8tetrahydrodiferuloylmethanepunica granatum fruit extractargania spinosa kernel oilcalendula officinalis flower extractethoxydiglycolxanthan gumtamarindus indica seed gumphenoxyethanolchlorphenesin

User Feedback Patterns

Medicube
Brightening glow effect

Users report an immediate brightening and glowing effect after application. The sea buckthorn base contributes to a warm, luminous finish.

Fun capsule experience

Like the collagen capsule cream, users enjoy the interactive texture of bursting the vitamin capsules.

Gradual dark spot improvement

Long-term users note gradual fading of dark spots over 4 to 8 weeks of consistent use.

Sunday Riley
Texture and absorption

Users frequently praise the lightweight, watery texture that absorbs quickly without stickiness. Layers well under other products and makeup.

Brightening over time

Consistent reports of improved radiance and brighter complexion with regular use, though dark spot fading varies by individual.

Oil control

Oily skin users report reduced shine and less sebum production throughout the day.

Packaging concerns

Some users note the dropper packaging can cause product to dry and crust around the lid. Others have reported the product arriving discolored.

Price sensitivity

Mixed opinions on value. Some feel the botanical complex justifies the premium; others find it overpriced compared to budget niacinamide options.

Which Should You Buy?

Medicube Deep Vita C Capsule Cream offers great value at a lower price point. Sunday Riley B3 Nice 10% Niacinamide Serum may be worth the premium if you want Niacinamide (10%).

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