Generally, these products are not harmful, unless they irritate your skin or you become allergic to them. There are a number of creams and products that help to moisturize the wound, which may help improve the healing. Plain Vaseline works best, is inexpensive, and non-allergenic. Daily massage of the scar for 10-15 minutes a day can help the scar fade. You should wait at least 8 weeks before starting massage to avoid stress on the scar.
Remember it can take a full year for your final result. Patience is the key; but if at any time you feel you need to be seen or just need reassurance, please do not hesitate to call.