"At first, I thought this was the best product I had ever purchased.

"Initially, I was blown away by this serum. During the first month of using the Jumiso Niacinamide 20, I saw a huge improvement: my dark spots were fading fast, my pores looked much more refined, and my skin had a beautiful, healthy glow. It is incredibly effective at brightening and evening out the skin tone."Section: What was BAD about this product?
"However, I learned that a 20% concentration is extremely powerful and needs to be handled with care. I started sing it excessively and made the mistake of applying it alone, without following up with a moisturizer. This combination eventually damaged my skin barrier. It's an excellent product, but you must use it sparingly and always seal it with a good cream to protect your skin

Section: What was BAD about this product?
"However, I learned that a 20% concentration is extremely powerful and needs to be handled with care. I
started using it excessively and made the mistake of applying it alone, without
following up with a moisturizer. This combinationeventually damaged my skin barrier. It's an excellent product, but you must use it sparingly and always seal it with a good cream to protect your

"Initially, I was blown away by this serum. During the first month of using the Jumiso Niacinamide 20, I saw a huge improvement: my dark spots were fading fast, my pores looked much more refined, and my skin had a beautiful, healthy glow. It is incredibly effective at brightening and evening out the skin tone."


Texture and absorption: It can feel a bit heavy or leave a slightly tacky residue if you apply too much. Finding the right amount for your skin takes a little trial and error.
Initial tingling sensation: During the first few weeks, it’s super common to feel a mild tingling or itching sensation right after application while your skin adjusts to the azelaic acid.
 Slow burn results: Because it’s a K-Beauty formulation that respects the skin barrier, it’s not an overnight miracle eraser. Fading deep hyperpigmentation requires consistent, long-term use.
Pilling issues: If you don’t let it fully sink in before layering your moisturizer or SPF, it can sometimes pill or ball up on the skin.


My Holy Grail for Troubled Skin: My Honest Review After Months of Using SKIN1004’s Triple Azelaic Acid Ampoule"If you’ve been following me for a while, you know that finding a product that actually keeps recurring breakouts at bay without stripping the skin barrier is a massive win. I’ve been using this ampoule by SKIN1004 for a long time now, and it’s officially a staple in my daily routine. What completely hooked me is their 10% Triple Azelaic Acid Complex. Unlike harsh acne treatments, this targets blemishes at every single stage—it calms the inflammation before it pops up, speeds up healing during, and fades those stubborn post-acne dark spots after. My skin texture is so much smoother, and my sebum production is balanced without feeling dry. It’s been a total game-changer for my skin’s clarity.




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