The invention relates to a bracelet or strap, in particular a watch band, comprising at least one organic material based portion intended to be placed in contact with the user's skin, said organic material containing at least one functional agent, such as an antibacterial agent. According to the invention, said organic material also contains a cosmetic agent for the skin, arranged to be able to be in contact with the user's skin when the bracelet is worn.The invention also concerns methods for manufacturing such a bracelet or strap.