noun
hidden double eyelid
A double eyelid where the crease is partially or fully hidden by a fold of skin, giving the appearance of a single eyelid when the eyes are open. Common in beauty and makeup contexts.
See also: 二重まぶた (ふたえまぶた)
彼女は奥二重だから、アイメイクに工夫が必要だ。
She has hidden double eyelids, so she needs to be creative with her eye makeup.
奥二重をくっきり見せるメイク方法を教えてください。
Please tell me a makeup technique to make hidden double eyelids look more defined.
A single eyelid without a crease; 奥二重 is a type of double eyelid, not a single eyelid.
Compound of 奥 (oku, 'inner, deep') and 二重 (futae, 'double layer'), referring to a double eyelid that is set deeper or partially concealed.