Final answer:
The term for when a conditioner is offered for free with the purchase of shampoo is called a BOGO promotion.
Step-by-step explanation:
The term for when a conditioner is offered for free with the purchase of shampoo is called a buy one, get one free (BOGO) promotion.
Revlon is using this promotional strategy to encourage customers to buy their shampoo by offering an additional product, the conditioner, at no extra cost. This can help increase sales and attract more customers.
By offering a conditioner for free, Revlon also aims to showcase the effectiveness and benefits of using their shampoo and conditioner together, promoting customer satisfaction and loyalty.