We introduce a new concept of certainty and coverage of a parameter of the soft set and present a new decision Tanning Foam making approach for the soft set over the universe using the certainty of a parameter.Also, we point out the drawbacks of the reduct definition by pointing out the delusion of Proposition Anti-Blisters 14 given by Herawan et al.[20] and provide the revised definition of the reduct of the multi soft set.