CBD is applied under the tongue because it is a method of delivery known as sublingual administration. This method allows the CBD to be absorbed directly into the bloodstream through the blood vessels under the tongue, bypassing the digestive system and liver metabolism. By applying CBD oil under the tongue, the active compounds in the oil are quickly absorbed into the bloodstream, resulting in faster onset and higher bioavailability compared to other methods of consumption such as oral ingestion. Sublingual administration also provides a convenient and discreet way to use CBD. The oil can be held under the tongue for about 60-90 seconds before being swallowed, and the effects are typically felt within 15-45 minutes. It is always recommended to follow the instructions on the product label and consult with a healthcare professional before using CBD to ensure proper dosing and to avoid potential interactions with medications or underlying health conditions.