The science of navel application, made effortless. The navel (umbilicus) is one of the body's most absorbent areas — rich in connective tissue and in close proximity to key abdominal structures. Applying castor oil transdermally via the navel has been used across cultures for centuries, and modern interest in transdermal absorption continues to grow. The Honest Skincare Belly Button Roller makes this ritual precise, clean, and genuinely practical. Formulated with 100% cold-pressed, BioGro Certified Organic castor oil (Ricinus communis), it delivers the full nutritional profile of the oil — including ricinoleic acid, vitamin E, and omega-6 and omega-9 fatty acids — without fillers, additives, or the mess of traditional bottle application. Why a glass roller? Our roller uses a smooth glass ball applicator. Glass is chemically inert — it won't interact with or degrade the oil over time, and it won't leach synthetic compounds. It also delivers a naturally cooling sensation on contact, which can help with under-eye puffiness and sensitive facial skin in addition to navel oiling. What's in it Cold-pressed, BioGro certified organic castor oil contains: Ricinoleic acid (~90%) — a unique hydroxyl fatty acid with documented anti-inflammatory properties Vitamin E (tocopherols) — an antioxidant that supports skin barrier function Omega-6 and Omega-9 fatty acids — known to support skin hydration and elasticity Why people use it People apply castor oil to the belly button for a range of reasons: Digestive & detox support — the navel sits over the abdominal region, and castor oil's anti-inflammatory compounds may support gut comfort when used as part of a regular self-care ritual Hormonal & cycle support — traditionally used to support lymphatic and pelvic circulation Skin hydration — ricinoleic acid is a humectant that draws moisture to the skin Relaxation & nervous system support — the ritual itself activates parasympathetic tone; slow, circular massage over the abdomen is well-documented for its calming effect How to use Roll the glass applicator gently around the navel in a slow circular motion. Allow 30 - 60 seconds for the oil to begin absorbing. Use morning, evening, or as part of your nightly castor oil pack ritual. Can also be applied under the eyes, along the brow line, or on fine lines — anywhere you want a precise, controlled dose of castor oil on delicate skin. No mess. No waste. Compact enough for your handbag or makeup bag. Leak-proof cap. Ships from Auckland. BioGro Certified Organic · Made in New Zealand