The 4-in-1 Sculpting Concealer in Hazelnut dn5 color by PUR is praised by kaitlyn in their video review. They mention that the product contains beneficial ingredients like vitamin B3 and retinol. Although kaitlyn admits that the shade may be a bit too dark for their current skin tone, they anticipate it will be a perfect match during the summer months. Despite their initial skepticism, kaitlyn is pleasantly surprised by the concealer's performance, noting that it blends well and looks beautiful. Overall, the 4-in-1 Sculpting Concealer by PUR seems to be a promising product with potential benefits for the skin, although the shade range may need improvement to cater to a wider range of skin tones.