Cleansing oil has always been a staple in my skincare routine as there isn't any other quicker option for me in my experience to remove makeup thoroughly. It takes 5 - 10 seconds to rub a few drops of cleansing oil on my face and eyes, and then 5 - 10 seconds of emulsifying it, and what you have after is a face that you can be sure that has no more residue of sunscreen, base, oil, and dirt.
That is, if the product in question happens to be a well crafted one.
And the DHC Cleansing Oil is one such example. I can tell the oil is well refined (similar to Tatcha's cleansing oil) because after washing it off, there isn't any residue like Softymo Deep Cleansing Oil. This cleansing oil is so effective that I can just use this in the evening after a night of wearing full makeup, go to bed, and not worry about any aftereffects like clogged comedones/whiteheads. It has a very mild olive oil scent that I'm not the biggest fan of but it dissipates upon emulsification.
Out of pure habit I tend to prefer double cleansing, but I would say you can get away with just using this alone. It leaves my skin fresh and soft, not dry or too moisturized at all, just very well balanced and even.
A note about the price: It's a mid-range product and worth every penny, and imo you tend to get what you pay for with skincare. You can choose from three different sizes, including a travel size with a pump. I couldn't ask for more! I tend to go through it rather quickly (1.5 to 2 pumps per application) but that's because I really love the efficiency of this product.
A note about my skin type: Combination to oily, prone to whiteheads and pigmentation.