Since I drink coffee frequently and smoke, I felt like my tooth tone had noticeably changed at some point, so I started feeling self-conscious whenever I smiled... So I did some research and got teeth whitening at D-Day Dental Clinic. What I liked most was the convenience of not having to visit in multiple sessions, and the cost was also quite affordable, so it was a good deal. When I mentioned I had mouth ulcers midway through, they even gave me medicine, and overall, the service was very pleasant. Now I plan to make sure to maintain the results well.