The product description is specific about the scalp type it is meant for: a scalp that tends to become oily, develops sticky flakes and feels less fresh soon after washing. It also says the formula works especially well when dandruff is dense, greasy and harder to remove, rather than dry and powdery. That means if your flakes are loose, white and the skin feels tight, this is probably not the right first choice.
What makes it less suitable for dry flakes is the combination of salicylic acid, which is included to help loosen dead cells, and SENSOCEL cellulose particles, which help lift away oily scale. Those mechanisms are useful for oily buildup but can be too much for a scalp that already lacks moisture. On a dry scalp, they can increase tightness or make the flaking more noticeable.
If your scalp is oily but your hair ends are dry, you can still use this product on the scalp and protect the lengths with conditioner. The formula should be focused on the roots, not rubbed through the lengths. However, if the flaking itself occurs together with dryness, choose a milder, more moisturizing shampoo instead.
This product is a cosmetic for scalp care, not a medicine. It is not intended to diagnose, treat or prevent any skin condition, and it should not replace a recommendation from a specialist. If you cannot tell whether your flakes are oily or dry, a pharmacist or dermatologist can help you look at the pattern and choose a more suitable routine.