Cleansing foam is a type of product where you dispense an appropriate amount into your hand, lather it up, roll it onto your skin, and rinse with water. If you have difficulty lathering with your hands, using a foaming applicator can be helpful. It is suitable for all skin types and is recommended for a light morning wash or as a second cleanse.
Cleansing oil is also widely used to remove blackheads. Its main component is oil-based, and using it to remove makeup allows for a deeper, cleaner cleanse. Since cleansing is performed gradually through a massage by rolling it slowly over the skin, it is relatively gentle on the skin. After use, it leaves the skin feeling moisturized rather than oily. After rolling for about 1-2 minutes, be sure to add water little by little to complete the emulsification process.
Source https://post.naver.com/viewer/postView.naver?volumeNo=32510212&memberNo=54067778