nah, spectral dnc is minoxidil, a growth stimulant. its like Rogaine etc.
spectral rs is just basically a few good topical potions mixed in one to promote healthy hair. the theory with rs is that thinning (miniaturised) hair might be able to recover with the right nutrients etc.
Spectral DNC has everything that Spectral RS has but it also has 5% minoxidil. So DNC is better and the same price.
I'm curious though if the percentages of some of the ingredients are greater in the RS, than the DNC, since there has to be 5% more of SOMETHING in the RS.