Wa `alaykum As-Salamu wa Rahmatullahi wa Barakatuh

In the Name of Allah, the All-Merciful, the Mercy-Giving

All praise is due to Allah. Peace and blessings be upon His Messenger Muhammad.

The massive majority of Muslim scholars including the four imam of the four schools of Islamic law are of the opinion that alcohol is impure.

They based their view on Quran 5:90, where alcohol has been set equal to “defilement (rijs)” which is najis according (6:145).

Some scholars have said that alcohol is not najis. Among those who consider it tahir are Sheikh ibn Uthaymeen, Imam a-Shawkani, Imam as-San`ani, Imam al-Muzni (the student of Imam a-Shafi`i) and Imam al-Laith ibn Sa`ad.

They maintained that it is only morally najis. There is a rule saying: any najis is haram, but not everything which is haram is najis.” So alcohol is haram and not najis until there’s a strong evidence for that.

They also used the fact that Muslims have spilled it on the roads and markets when it was prohibited (see for example here) without cleaning the Jars etc. Afterwards, so if it was najis they wouldn’t have spilled it on the roads as one could conclude from this hadith.

And they also added some comments on the evidences of their “opponents” saying that in verse (5:90) the defilement is not physical because it was compared to gambling, sacrificing on stone alters to other than Allah and divining arrows.

My view is that using those perfumes of shampoo for washing is permissible, though I personally do not use it.

Almighty Allah knows best.