Haven't tried, but grapefruit essential oil is good for cellulite. Most citrus essential oils are great for cellulite too. You can massage it in with a little bit of olive oil (and/or cocoa butter) and even a smidge of apple cider vinegar.
Olive Oil and/or Cocoa Butter = Carrier oil, moisturization, Anti-oxidant/Vitamin E, Skin protectant, Emollient, reduces stretch marks
Apple Cider Vinegar = Alpha hydroxy acid, smooths skin and reduces look of scars and marks
Essential oils - grapefruit = promotes circulation and reduces appearance of cellulite