No. If you buy several variants of the shampoo bar, the discount will still apply.
For example, the first discount bracket for shampoo is 11 bars. You can buy 11 bars of the shampoo bar, regardless of variant, and still get them at discount.
Meaning, you do not need to buy 11 bars of Aloe-Moringa, 11 bars of Lice and Dandruff, and 11 bars of Gogo Hair Grow. You can buy 5 bars of Aloe-Moringa, 3 bars of Lice and Dandruff, and 3 bars of Gogo Hair Grow, and you will get all of them at discount.