These are not inexpensive, concedes Neil Markey, a combat veteran who now facilitates legal psilocybin magic mushroom at Beckley Retreats in Jamaica. Whether you're straightening your strands with a hot tool or routinely applying chemicals, such as bleach and hair dye, you've probably experienced split ends, breakage, dryness, and even hair loss. It's essential to go in with a clear mind, as...