depends on several other parameters;
- applying only: nothing much if ur credit length more than 3 years
- card added to cibil: depends on its limit and ur overall credit limit (again not much to worry about)
CIBIL will change constantly, no need to worry unless there is a remark about 'missing payments' or 'excessive enquiries' otherwise everything will be normal and minimal. It will be easily recovered within next 2 or 3 months.
IMO. if your cibil >750 and ur total credit length more than 3 years -- more or like it will be consistent and can safely ignore it.