This Carophyll red is an natural pigment extracted from crustaceans. Carophyll red is the "secret" ingredients in some baits. It is known in some circles of the bait industry as one of the top attractors for carp. This product is extracted mainly from krill and will have that distinct smell.
Recommended dosage: 4-6 ml per kg.
Dosage can be increased for higher levels of attraction for hook baits / pop ups.