To solve this kind of odd one out question, the trick is to look past the product category and check which company actually owns each brand.
Pampers is a diaper brand that belongs to Procter and Gamble, a large American consumer goods company. Tide is a laundry detergent brand, and it is also owned by Procter and Gamble. Pantene is a shampoo and hair care brand, and this too sits under the Procter and Gamble umbrella.
Dove, on the other hand, is a soap and skin care brand that belongs to Unilever, which is a separate consumer goods company and a direct competitor of Procter and Gamble in many markets.
So three of the four names, Pampers, Tide and Pantene, all trace back to the same parent company, while Dove traces back to a different one. That single mismatch is what makes Dove the odd product out.
Therefore the answer is option 2, Dove, since it is the only brand here that is not made by Procter and Gamble.