Haircuts depend on two things—the skillset of the stylist and the quality of the shears. And the quality of the blades are only as good as the person who sharpens them. Remember: Your career is important, your shears are important to your career and your sharpener is important to your shears. If your sharpener damages your shears, your livelihood suffers. Wherever and whenever possible, only use a sharpener who you know and trust or who comes highly recommended from someone whose opinion you value. In many cases, the best option is to mail your shears to a professional…