Crystal Renn would never have botox.

The 28-year-old supermodel has revealed she isn't interested in undergoing cosmetic procedures and prefers to use home-made products to maintain her youthful complexion and self-taught beauty tricks to enhance her features instead.

She said: ''I have this lip trick - I have these exfoliating witch hazel pads, and I do like a real scrub with them on my lips. I go inside the mouth, which brings blood forth to the lips. You look like you just had Botox, which I won't do. But if I need bigger lips immediately, for a shoot or something, I can do this, and it really works.''

Crystal added she often shuns expensive face creams and uses olive oil to keep her skin hydrated.

She said: ''I take pure organic olive oil and make myself a salad on my face. Skin immediately receives olive oil, where it's harder for lotions to absorb as fast. I rub it all over my body then wash it off so I'm not a grease thing.''

The brunette beauty also swears by doing yoga in the middle of the night to help her achieve a ''sound mind'' before going to bed.

She told Into The Gloss: ''Sometimes when I come home, I'll do midnight yoga just to deal with my emotional self before going to bed. The day is confusing, it's intense, it's whatever, and I really believe in a sound mind before I go to bed - if that means doing yoga until 1am, so be it.''