I have a hard time believing that an ounce of a serum could really be worth this much money, but I tried it anyway. It does a very nice job with sensitivity relief when skin is irritated. I use tretinoin, which can sometimes irritate my skin; this helps in those cases to calm the irritation. It's also quite hydrating. I've not yet experienced any long-term benefits ... I was hoping to see a reduction in crepiness in my neck, since that's usually influenced by hydration (usually I can reduce it with a good hyaluronic acid serum), and this does help to some degree, but not as much as I'd hoped. For the price, I'm not sure it lives up to significant effectiveness any more than other moisturizing serums, but it's definitely good. Value for money isn't there for me ... at least not that I'm experiencing yet.

I have been using Vasco-Tonic serum for years and it has worked PERFECTLY to minimize and hide red veins and red marks on my face. With this new formula, the veins and marks are ALL coming back! Yes, Vasco-Tonic was watery, but it worked! Unfortunately, for my skin type, adding all these moisturizers and oils creates an oil slick on my face when paired with my other GM Collins skin care and it seems to be keeping the actual reason for using this product from working. This is not a one size fits all product and I really would like to have the choice of continuing to use the original Vasco-Tonic, which actually worked for me.

I have been loving this serum! It is the perfect consistency - creamy but lightweight and layers well with other products. I have actually been applying this before my Tretinoin, and it has really helped keep my skin calm without inhibiting the effectiveness of the Tretinoin. It is a little pricey, but I have had such good experiences with this brand that I think I’ll likely reorder when I run out. My skin looks more youthful and dewy after a few weeks of consistent use.

Just started using and it is lovely on my sensitive skin. I love all my GM products.

The GM COLLIN Advanced Serum is a great option for anyone dealing with sensitive or redness-prone skin. It has a lightweight texture that absorbs quickly without feeling greasy, and it layers nicely under moisturizer or makeup. After consistent use, skin feels calmer and looks more even, especially in areas that tend to flush easily.What stands out most is how soothing it feels on application—no irritation or heaviness, which can be hard to find with targeted treatments. It works well as part of a daily skincare routine and pairs nicely with other gentle products. Overall, it’s a high-quality serum that delivers visible calming benefits while staying kind to sensitive skin.

I was SUPER surprised by how much this serum helped reduce the redness in my cheeks. I have fairly sensitive skin, and I’ve tried a lot of products that claim to calm irritation, but this one actually made a noticeable difference within a short period of use.The texture is lightweight and absorbs quickly without feeling greasy or heavy. It also leaves my skin feeling very soft and hydrated, which I wasn’t fully expecting. The Vitamin B5 seems to do a good job supporting the skin barrier because my skin overall just feels calmer and smoother.That said, I do have some hesitation because of the price point. At around $84, it is definitely on the higher end for a serum, and that makes me think twice about repurchasing even though I like the results.Overall, it works very well for redness and skin comfort, and the improvement in how my skin feels is noticeable. I may consider buying it again, especially if I continue to see these results over time, but the cost is the only thing holding me back.

This advanced serum is super nice! It is lightweight, and absorbs quickly. I noticed pretty quickly that my skin felt more calm and hydrated after using it consistently. It does a great job at helping reduce redness and irritation. It also layers really well with the rest of my skincare without pilling or feeling sticky. A little goes a long way, so the bottle lasts longer than you’d expect. The only downside is the price.. It is pretty expensive. But would be worth it if nothing else has worked for you.

I use a lot of different products on my skin, and some of them are exfoliators that are designed to make the skin a tad upset and irritated in order to initiate a recovery process that strengthens the skin in the long run. This GM COLLIN Vaskotonic Advanced Serum is a nice followup product to use after those kinds of products and procedures, due to its calming effect. I trust the GM COLLIN brand because it's clinical skincare back in science, and I've tried many of their products with good success. This serum does have a nice feel to it, as it goes on light and silky and absorbs well. Its calming effect seems to help my skin recover more quickly from the stresses that I sometimes put it through, including exfoliation as well as overexposure to heat or sun, and it also boosts my skin's hydration level with added moisture. I haven't experienced any negative side effects with this serum, and I feel like it's a good value if you are looking for a clinical skincare product with skin-calming benefits.

I've been using their toner and and eye serum and was already in love with those products. This Vaskotonic serum has stolen my heart! It's smooth, creamy, and pretty much scentless. Extremely moisturizing and soaks in deeply. After about 3 weeks, the difference is actually visible! My cheeks have always had a redness problem that no comfortable amount of makeup could really cover up.

This serum does a really good job at calming redness on my cheeks. I don’t feel like I need to wear cover-up even for small errands, which is a big deal for me. The texture is lightweight and spreads easily, absorbing quickly without leaving a sticky or heavy residue. It’s unscented, which I appreciate because even subtle fragrances can irritate my sensitive skin. My skin feels hydrated and balanced after applying it, and I can layer it under my moisturizer without any issues. The vitamin B5 seems to reinforce my skin barrier rather than just masking redness. The price is steep at $86 for 1 oz, but for someone who struggles with sensitive, reactive skin, it feels worth it.