Is it obligatory to disclose defects and advantages, such as wearing glasses sometimes or having hair that isn't straight, to a man who proposes to me?

The defects that must be disclosed before marriage are those that prevent sexual intercourse, or contagious and repulsive diseases such as leprosy and elephantiasis. What does not fall under this criterion does not require disclosure, but disclosing it is better for peace of mind and the continuation of affection.