Shikakai oil is an oil extracted from the seed pods of the Acacia concinna tree, commonly known as the Shikakai tree, which is native to India. It is known for its nourishing and conditioning properties for hair, it is often used as a hair oil or as an ingredient in hair care products. It is also believed to have anti-inflammatory properties and may be useful for treating certain skin conditions. It is commonly used in Ayurvedic and traditional Indian hair care to improve hair strength, promote growth and prevent hair loss. It is typically used as a hair oil or added to other carrier oils and used as a scalp massage oil, it can be also added to hair care products like shampoos and conditioners. It is considered safe for most people when used topically. However, it's always best to consult with a healthcare professional before using it internally.