Is Beauty of Joseon Glow Serum good for oily skin?

What should you check on the bottle?

For oily skin, look for products labelled "oil free" and "noncomedogenic", meaning formulated not to clog pores. Do not assume Glow Serum has either designation without checking your bottle. Choose by the label rather than the name, because "Glow" is not an instruction to your oil glands.3

Niacinamide is a form of vitamin B3 used in skincare. Beyond oil regulation, it may support the skin barrier, the protective layer that helps keep moisture in and irritants out. It can also help calm inflammation. These are reasons to consider a niacinamide formula, not reasons to expect every serum containing it to perform identically.1

Will it shrink pores or stop breakouts?

Niacinamide may make pores look less noticeable, but nothing has been proven to reduce their actual size. Oil regulation can help with clogged pores and breakouts; it does not make Glow Serum a guaranteed acne solution. There is no fixed result date to give for this serum, so do not build your decision around a promise of clearer skin by a particular week.1

How do you fit it into an oily skin routine?

1. 1Start with a gentle foaming cleanser. Wash up to twice daily and after sweating, without scrubbing.
2. 2Before full face use, test a small amount on your forearm and wait 24 hours. This is general niacinamide testing advice, not a diagnostic allergy test.
3. 3Follow the Glow Serum bottle's directions for the amount and application order. General niacinamide guidance allows once or twice daily use after gentle cleansing; sensitive skin should start slowly with a low concentration.
4. 4Keep moisturizer in the routine. Oily skin still needs hydration, and moisturizer belongs after cleansing.
5. 5For daytime protection, use a broad spectrum sunscreen with SPF 30 or higher.

Check whether your moisturizer or other serums already contain niacinamide before adding another product with it. More bottles do not create more appointments for the same ingredient. If you also use retinol or acids, avoid exfoliating masks that duplicate those active ingredients, since the extra layer can trigger dryness and irritation.14

Who should be careful?

If your bottle lists propolis, avoid it if you have a known propolis allergy. Propolis can cause allergic contact dermatitis, an itchy inflammatory rash. People with known allergies to balsam of Peru, poplar, conifer or salicylates are also advised to avoid propolis because of shared allergenic substances.5

Stop using the serum if you develop itching, burning, a rash or swelling. Seek medical assessment if symptoms persist after stopping; cosmetic allergy can require clinical patch testing. Seek urgent help for breathing difficulty or throat symptoms. A cosmetic allergy can develop even after years of use without problems.25

If excess oil, blackheads or acne remain troublesome, see a dermatologist rather than repeatedly swapping serums. For shine during the day, gently press blotting paper onto the skin for a few seconds instead of rubbing.3