The Haldi ceremony is a ritual holy bath also known as pithi ceremony, which is one of the pre-wedding ceremonies in India. Turmeric (haldi), oil and water are applied to both the bride and groom by married women on the morning of the wedding. The mixture is believed to bless the couple before the wedding.
Since turmeric or haldi is known for its medicinal properties as well as being antiseptic, an application of this ingredient before marriage would ensure that the bride and groom are blessed with blemish-free skin. It also ensures that the couple is protected against any cuts, bruises or ailments before the wedding.