I recently completed the 7-day Numbuzin NAD + Retinal challenge to target fine lines and necklines, and I wanted to share my experience for anyone considering this routine. The product I used was the No.9 NAD + Retinal Volumetox eye cream, applied meticulously every day on the neckline area. From Day 1, I noticed that the cream had a lightweight texture that absorbed quickly without leaving a greasy residue. This made it easy to include in my morning and evening skincare routines. Throughout the week, I focused on gentle upward motions during application to promote better absorption and encourage lifting effects. By Day 3, the skin began feeling more hydrated and supple, likely due to the NAD+ component boosting cellular repair mechanisms. Retinal, a derivative of vitamin A, gently exfoliated dead skin cells which helped improve skin texture visibly. By the end of Day 7, I noticed a subtle but firming effect on my neckline. The fine lines appeared less pronounced, and my skin tone was noticeably brighter without irritation. This challenge showed me that with consistent use of active ingredients like NAD and Retinal, it's possible to treat delicate areas such as the neck effectively. For those new to these ingredients, I recommend doing a patch test beforehand to ensure skin tolerance. Also, because retinal can increase sun sensitivity, applying sunscreen during the day is crucial. Overall, this 7-day journey with Numbuzin’s Volumetox eye cream inspired me to incorporate more targeted treatments into my skincare regimen. If you are looking to improve necklines and want visible results in just one week, this challenge might be a good fit for you!