Aveda shampoo is giving away FREE Aveda Invati sample packs. Click here to download your coupon for this Aveda free sample. This 3-step Aveda free sample pack includes an exfoliating shampoo, thickening conditioner, and scalp revitalizer. Coupon can be redeemed at participating locations. If there are no locations nearby you can still redeem online with a $30 purchase when you enter the code INVATITRIO at checkout. Offer expires this June 30, 2015.