If you ask most hairdressers, they will tell you to steer well clear of Pantene as it is one of the worst shampoos for hair health. It contains a lot of silicone, which can be compared to putting foundation on your skin without cleaning it off - although you can do if you use a good cleansing shampoo.
Best to stick with a brand that is good for your own hair, or you can't go wrong with the slightly more expensive salon brands (charles worthington and kerastase make my hair almost mirror-like in quality!).
If you find your scalp stings, use a "gentle" shampoo - although this will probably not cleanse as intensively.