I've been using the LAYERLAB Clear Stone Dark Spot Serum for a few weeks, and I must say, the texture really stands out. Despite its potent 13% tone-care formula, the serum feels incredibly light and watery on my skin, which makes it easy to layer under other products without feeling sticky or heavy. One thing I noticed is how quickly it absorbs, which is perfect for my morning routine. The inclusion of niacinamide really helps brighten my complexion and diminish those stubborn dark spots that would otherwise make my skin tone look uneven. Being part of a Korean skincare regimen, the serum aligns well with the gentle yet effective approach I prefer. Consistency is key with this product. Applying it daily improved my skin's overall clarity over time, reducing hyperpigmentation without causing irritation. The watery texture also means less product is needed per application, which is economical considering its concentrated ingredients. For anyone struggling with dark spots or uneven skin tone, this serum can be a great addition to your skincare arsenal. Just make sure to follow up with sunscreen during the day, as niacinamide and other tone-correcting ingredients can increase your skin's sensitivity to sunlight. Overall, I'm impressed by how this serum combines effective brightening with a lightweight feel—definitely a staple for my routine now.