如果在前一天晚上（或者使用前8小時以上）塗抹了化妝水/乳霜/身體油，是否必須用酒精擦拭該區域才能使Ray Gun有效？

Q: 如果在前一天晚上（或者使用前8小時以上）塗抹了化妝水/乳霜/身體油，是否必須用酒精擦拭該區域才能使Ray Gun有效？

It is best to still wash the problematic area before applying Ray Gun. Personally, I would wash the area of the body to be treated so that no other oils or creams are left on the body. Once the treatment has been completed, then you can apply any oils, lotions or creams on the body area.

Q: 如果在前一天晚上（或者使用前8小時以上）塗抹了化妝水/乳霜/身體油，是否必須用酒精擦拭該區域才能使Ray Gun有效？

It is best to still wash the problematic area before applying Ray Gun. Personally, I would wash the area of the body to be treated so that no other oils or creams are left on the body. Once the treatment has been completed, then you can apply any oils, lotions or creams on the body area.