I made a mistake by using Lobate GM ointment on my face, even though I had fewer acne at the time. After using 2 or 3 tubes, my skin got worse. I went to a skin specialist and had six months of treatment, but now I have red marks from the pimples. What should I do to get rid of these marks?

It sounds like you may be dealing with post-inflammatory hyperpigmentation from the acne. To help lighten the red marks left by the pimples, you can try using a topical cream containing hydroquinone, such as Melalite cream, applied once daily at night. Additionally, using a sunscreen with high SPF during the day is important to prevent further darkening of the marks. Make sure to follow up with your skin specialist for further guidance and monitoring of your progress.