Use diluted Grapefruit seed extract to gargle or consume a few drops in water or juice. Also use as a mouthwash, facial and nail cleanser, skin rinse and household cleanser. Ideal for travelling. Not for citrus allergy sufferers. Never use undiluted. See suggested intake and usage information below. All-time best seller Grapefruit seed extract is a natural cleanser wherever there is a need Ideal for internal or external use, especially as a mouthwash, or on the face and nails and as a household cleanser Perfect digestive support especially whilst travelling Available in liquid or tablet form Do not use undiluted