COSRX The Alpha Arbutin 2 Discoloration Care Serum - 50ml - Ulta Beauty: For Normal, Oily, Combination Skin, Liquid Form, Unscented
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4.3 out of 5 stars with 1794 ratings
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Guests are saying
This serum has garnered attention for its effectiveness in addressing skin discoloration and dark spots. Many guests have reported visible improvements in their skin tone and texture after consistent use. The lightweight formula absorbs quickly, making it a seamless addition to daily skincare routines. While some guests experienced varying results, the overall sentiment leans towards satisfaction, especially for those with sensitive skin. Its gentle nature and ease of application make it a popular choice for achieving a brighter complexion.
Summary created by AI from text of reviews reflecting recent feedback provided across different star ratings (includes incentivized reviews)
4.6 out of 5 stars with 140 reviews
100% would recommend
1 recommendations
5 out of 5 stars
31 March, 2026
originally posted on cosrx
5/5, fantastic, cost effective product
[This review was collected as part of a promotion.] 5/5, fantastic, cost effective product for skin coloration. I use this every morning.
5 out of 5 stars
21 March, 2026
originally posted on cosrx
It’s really good at clearing
[This review was collected as part of a promotion.] It’s really good at clearing up any dark spots I have post-breakout. I also recommend the mask with this serum I find that does miracles for my face and keeps it glowing for the next few days after.
5 out of 5 stars
21 March, 2026
originally posted on cosrx
I’ve been using The Alpha-Arbutin
[This review was collected as part of a promotion.] I’ve been using The Alpha-Arbutin 2 Discoloration Care Serum consistently, and it’s a solid option for targeting uneven skin tone. The texture is lightweight and absorbs quickly without leaving any sticky residue, which makes it easy to layer with other products. Over time, I noticed a visible improvement in post-acne marks and overall brightness. My skin looks more even and less dull. The combination of tranexamic acid and niacinamide works well to calm and gradually fade discoloration without irritating my skin. That said, results are not instant—you need consistency and daily sunscreen to actually see progress. It’s not aggressive, but that’s also why it’s gentle and suitable for regular use. Overall, a reliable serum if your goal is to improve dark spots and maintain a more even complexion.
2 out of 5 stars
16 March, 2026
originally posted on http://www.ulta.com

Nope
I used one bottle of this with no issues. I thought it helped some with evening out skin tone. But my second bottle is causing breakouts. More like skin irritation than acne. There is no ingredient in this that shoukd be a problem for me, so I wonder if something has oxidized and I received a bad batch.
5 out of 5 stars
15 March, 2026
originally posted on cosrx
Brighter and radiant.
[This review was collected as part of a promotion.] Absolutely an amazing product! I can’t live without this product. The dullness in my skin has been faded since I use this product. My skin has been brighter and more radiant.
5 out of 5 stars
28 February, 2026
originally posted on http://www.ulta.com

Great product
This product is great for my sensitive skin. Its such an affordable price and it does what i need it to. Help lift dark spots from acne overnight.
5 out of 5 stars
29 January, 2026
originally posted on http://www.ulta.com

Really good for sensitive skin!
I have very reactive sensitive rosacea-prone skin and this serum has helped immensely for my acne hyperpigmentation without irritating my skin. I have very reactive skin that I cant even use vitamin C derivatives. This serum has no vitamin C or exfoliating acids, so its perfect for sensitive skin. It's definitely slow acting and you have to be very consistent with it but i can see my dark spots fading faster than if I didnt use anything.
5 out of 5 stars
25 January, 2026
originally posted on cosrx
Only received it a few
[This review was collected as part of a promotion.] Only received it a few days ago to add to my skincare regime so not yet able to report if it is making any difference
5 out of 5 stars
22 January, 2026
originally posted on cosrx
Very good product I highly
[This review was collected as part of a promotion.] Very good product I highly recommend you to use to fix discoloration
3 out of 5 stars
3 January, 2026
originally posted on http://www.ulta.com

Don't love the consistency
If you do add more than one layer, it gets pretty sticky/tacky, so layering on more moisturizer and SPF can get tricky--particularly if you plan on putting on makeup. I also think that there are better products out there for discoloration.
5 out of 5 stars
27 December, 2025
originally posted on cosrx
Adorei este sérum. Estou a
[This review was collected as part of a promotion.] Adorei este sérum. Estou a usar apenas à uma semana, e já noto uma redução nas minhas manchas. Com sua pipeta coloco a quantidade pretendida apenas sobre a area a tratar. Vou continuar a usar até atingir a tonalidade que pretendo. Recomendo.
5 out of 5 stars
22 December, 2025
originally posted on cosrx
Amazing
[This review was collected as part of a promotion.] Amazing
5 out of 5 stars
20 December, 2025
originally posted on cosrx
Discoloration serum review
[This review was collected as part of a promotion.] I have problems with hyperpigmentation and was happy to find this serum. I have been using the serum for about two weeks and feel like it’s working already. I hope I can see more results using it long-term.
5 out of 5 stars
16 December, 2025
originally posted on http://www.ulta.com

Effective and Gentle!
I don't use this on my face. I actually use it on my abdomen to fade discoloration of surgical scars. It has a nice light texture and doesn't feel sticky. I use it every day in the morning and at night I apply retinol. The combination of the two products has really done a nice job at lightening the discoloration of my scars. I also love that there are multiple active ingredients for fading discoloration so it's a great all in one serum!
5 out of 5 stars
20 November, 2025
originally posted on cosrx
Not too sticky and fragrance
[This review was collected as part of a promotion.] Not too sticky and fragrance free. Just what I was looking for. My skin feels great.
5 out of 5 stars
17 November, 2025
originally posted on cosrx
Has an instant brightening effect.
[This review was collected as part of a promotion.] Has an instant brightening effect. Waiting to see long term effects! I bought for pore shrinkage, complexion issues.
5 out of 5 stars
16 November, 2025
originally posted on http://www.ulta.com

Love this serum!
I'm really enjoying this serum. When I use this consistently, my skin is brighter and smoother.
5 out of 5 stars
11 November, 2025
originally posted on cosrx
Easy to apply. Doesn't leave
[This review was collected as part of a promotion.] Easy to apply. Doesn't leave greasy. Drys quickly. I just started using it so not much to say as of yet.
5 out of 5 stars
10 November, 2025
originally posted on cosrx
It feels great on my
[This review was collected as part of a promotion.] It feels great on my skin and doesn’t irritate. Came in earlier than I expected. It dries fast and I am already seeing a difference in my inflammation/post acne marks.
5 out of 5 stars
26 October, 2025
originally posted on http://www.ulta.com

Amazing but start slow
I have been using this since May and I will say its nice to have a product that addresses all sides of hyperpigmentation especially for black people. Very well formulated and a huge bottle. I use it 4x a week once a day. I have reactive super sensitive acne prone skin and eczema so I definitely purged. I started off slow 1x a week for 2 weeks the went up from there. You have to be serious about using sunscreen and a hat. Any serum will take a while to work nothing is magic in a bottle but if youre patient its worth it for older marks. New marks barely leave a mark and goes away fast. I combined mine with microneedling and my skin looks wayyyy different.