i have been a connoisseur of ganja for the last 10 years. i am very strict when examining quality and consistency of the flowers and concentrates I medicate on. first time trying Alien OG shatter and boy this is CREAM OF THE CROP if you are getting a authentic batch. the concentrate kinda crept up on me within 10-15 minutes. the fade started with a warm and fuzzy feeling in my eye lids, incredibly relaxed, very euphoric. a very premium og taste and feel in my encyclopedia. after 45 minutes or so, i started to slowly and comfortably feel sleepy and increase of body & mind relaxation. perfect because I have to rise and shiny early for work tomorrow! highly recommended strain if you find a collective that extracts & purges their shatter properly + uses the real deal strain.