What is the difference?

DetailGlow SerumGlow Deep Serum
Main focusHydration, balance and excess oilDullness, dark spots and uneven tone
Named ingredientsPropolis and niacinamideRice bran water and alpha arbutin
Formula detailDo not assume a concentration from the product name.Also contains niacinamide; ingredient percentages are not specified.
Texture and finishDescribed as hydrating; thickness is not specified.Described as leaving a dewy, hydrated finish.
DirectionsCheck your bottle for application and timing.A few drops, followed by moisturizer; evening only.
Sizes30 ml and 60 ml30 ml and 60 ml
Canadian store listing$27 regular price; $19.44 sale price$27 regular price; $19.44 sale price
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The useful distinction is oil balance versus dark spots, because the names have already used up their entire allowance of clarity. Pick Glow Serum when hydration and excess oil are your priorities. Pick Glow Deep when uneven tone is the main concern. Niacinamide, also called vitamin B3, is used in topical treatments for hyperpigmentation, meaning darker patches of skin. Glow Deep contains it too, so this is not a simple niacinamide versus arbutin contest. Both sit at the same listed price on the Canadian store, so the extra word in Glow Deep is not a surcharge.123

How do you use Glow Deep Serum?

  1. 1If your skin is sensitive, patch test before regular use.
  2. 2In your evening routine, dispense a few drops onto clean hands. Keep the dropper from touching your skin.
  3. 3Gently pat the serum into your skin, then apply moisturizer.
  4. 4Store the bottle in a cool, dark place away from direct sunlight.
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Beauty of Joseon recommends Glow Deep for evening use only because alpha arbutin is vulnerable to light and heat. The brand describes it as suitable for all skin types and recommends regular use, without specifying a weekly frequency or a fixed results deadline.2

Beauty of Joseon Glow Serum vs Glow Deep Serum for acne marks

For flat brown or darker marks after a breakout, choose the dark spot focused Glow Deep. Flat discoloration after acne is usually not a scar. Post inflammatory hyperpigmentation is discoloration left after inflammation, and it usually fades over time. Depressed scars are dents caused by too little collagen during healing; raised scars form when the skin makes too much collagen. Treat dents or raised areas as a separate concern rather than choosing between these serums for brightness. If flat discoloration bothers you, a dermatologist can recommend treatment to help it fade faster.24

How long do acne marks take to fade?

Think in months rather than days for pigment changes. Once the cause stops, a spot a few shades darker than your natural skin tone usually fades within 6 to 12 months; deeper pigment can take years. Those are general fading times, not a Glow Deep timetable. Hyperpigmentation treatments can take months to show improvement. If acne keeps producing new marks, treating the breakouts matters alongside fading the old ones.35

For dark marks in darker skin tones, use tinted sunscreen containing iron oxide, with SPF 30 or higher, broad spectrum protection and water resistance. Iron oxide helps protect against visible light, which can contribute to dark spots. Apply before going outside and reapply every two hours, and after swimming or sweating.5

Stop using a product if it burns or stings; irritation can itself trigger dark spots. Seek medical care if a discolored area is hot, itchy, painful or leaking fluid. If your dark spot routine is not giving you the results you want, a dermatologist can assess whether prescription treatment would help.35

Where this answer comes from

  1. 1Beauty of Joseon Serumsca.beautyofjoseon.com
  2. 2Glow Deep Serum : Rice + Alpha-Arbutinca.beautyofjoseon.com
  3. 3Hyperpigmentation: What it is, Causes, & Treatmentmy.clevelandclinic.org
  4. 4Acne scars: Signs and symptomsaad.org
  5. 5How to fade dark spots in darker skin tonesaad.org