ISLAMIC HIJAB?

However, in its broadest sense, it is an aspect of human value, prescribed by Allah SWT, for both man and woman and refers to that barrier which keeps evil from good and helps to build a morally ethical society.       

In Islam, as taught and explained to us by Ma'sumeen (A.S.), Hijab is that barrier which protects one from Namahram by means of Modesty in Dress, Outlook and Character.  Our Ulema and Scholars unanimously agree on 10 to 12 points, which, in combination form what we know as ‘Islamic Hijab'.

MODESTY IN DRESS
Hair should be appropriately covered.
Front part/Chest should be appropriately covered.
Outer garment should be loose so as to hide the shape of the body and should not be transparent.
MODESTY IN OUTLOOK
Makeup
Perfume
Ornaments
Any other outward attractions           
All the above should be avoided in public, especially in front of Namahram, as they act as part of ‘attraction' rather than ‘barrier'.

MODESTY IN BEHAVIOUR
Unnecessary conversation with Namahram
Unnecessary physical contact with Namahram
Unnecessary eye contact (lowering the gaze) with Namahram
Talking, walking or behaviour other than normal, in the prevailing circumstances, in the presence of Namahram
Inviting smile towards Namahram
The above 5 items are at the core of Islamic Modesty in Behaviour and so should be avoided at all cost. 

Of course most of the above items relate to women because Allah SWT, in His eternal wisdom, has endowed them with exceptional beauty, grace, humility, kindness and above all modesty.  It is in their laps that the lives of Prophets, Imams, Ulemas and world leaders have blossomed and it is they whose outlook and behaviour that has given a specific pattern to the society. 

However, on the question of Hijab, Islam has equal viewpoint both for men and women.  Al-Qur'an is very specific on all the above issues.  There are many verses in Qur'an pertaining to Hijab, e.g.

In Verse 30 from Sura-e-Noor - Chapter 24 - Allah SWT says:

"Say to the believing men that they cast down their looks and guard their private parts; that is purer for them; ...."

In Verse 31 from Sura-e-Noor - Chapter 24 - Allah SWT says:

"And say to the believing women that they cast down their looks and guard their modesty (private parts) and do not display their beauty and ornaments except what appear thereof, and let them wear their head-coverings over their bosoms and not display their ornaments except to their husbands,......(Mahrams).  .....and let them not strike their feet in order to draw attention to their hidden ornaments........"  

In Verse 19 of Sura-e-Lukman - Chapter 31 - Allah SWT mentions:

"Be modest in your walk and lower your voice;................................"

So Hijab has been ordained both for men and women and is one of the commandments of Allah SWT.  Our Prophet (saww) has said very clearly that "those who do not observe proper Hijab, are blatantly defying the commandment of Allah SWT".