There's many different types of lip oil which I will be comparing the Etude House Honey Cera Treatment Oil with Goodal Camellia Lip Oil.

Etude House Honey Cera Treatment Oil:

Effects: Hydrates the lips

Consistency: Leaning towards the oily side, and not very sticky, however the oil does come in contact with the inside mouth. Thinner than Goodal's lip oil

Scented: Yes

Suitability: Daily (morning and afternoon)

Goodal Camellia Lip Oil:

Effects: Provides intensive moisture to the lips

Consistency: More sticky, bits of oil here and there, but the oil stays in place. Thicker than Etude House's treatment oil.

Scented: No? (as I do not notice any)

Suitability: Night

To wrap this up, both product works like magic. It really depends on your preference whether you are looking for hydration or intensive treatment. I use these at different times, one daily and one at night as the consistency and suitability are different. But I highly recommend buying both of them.