The Blowout Professor just dropped his ultimate hair‑product tier list, and it’s a masterclass in what actually keeps hair healthy. Hair oils and leave‑in conditioners earn a solid S tier for daily use, delivering moisture, shine, and split‑end prevention. Volume sprays land in A tier for crown lift without crunch, while mousse gets a D and shine sprays an F for weighing hair down. Even hairspray only ranks C tier — best saved for special occasions. The message is clear: healthy hair comes from smart, consistent choices, not heavy products.

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