A shear is the tool you will hold for six hours a day for the next five years, so it is worth more thought than a brush. Olivia Garden's cutting range at ProHair covers 5 in, 5.75 in and 6.5 in blades, left-handed as well as right, and thinners from 9 to 35 teeth. Prices run from $81.24 for a single TextureCut thinner to $299.99 for a SilkCut Pro left-handed shear-and-thinner set in a deluxe case.
1. Blade length — set by your technique, not your hand size
- 5 in — the control length. Best for precision, detail around the ear and hairline, dry cutting, point cutting and barbering. If you cut mostly short hair or work over the comb, this is your shear.
- 5.75 in — the general-purpose salon length and the one most stylists should buy first. Long enough for slide cutting and a clean blunt line, short enough to detail.
- 6.5 in — the speed length. Best for scissor-over-comb, long hair, heavy blunt lines and anyone doing men's cuts at volume. Harder to detail with, and harder on a small hand.
In our range: the SilkCut Right-Handed Shear Set ships in 5 in, 5.75 in and 6.5 in; the SilkCut Pro Left-Handed set in 5 in, 5.75 in and 6.5 in; the PrecisionCut and SwivelCut razor sets at 6.5 in and 5 in respectively.
2. Convex versus bevelled
Olivia Garden's professional shears use convex blades — a hollow-ground, near-razor edge. Convex glides, which is what makes slide cutting and slithering possible; bevelled blades have a micro-serration that grips the hair and are better suited to blunt cutting and to students. If you slide cut at all, buy convex. The trade-off is that convex edges are less forgiving of being dropped and need proper sharpening, not a quick touch-up.
3. Thinners: tooth count is the whole decision
| Teeth | Removes | Use it for | In our range |
|---|---|---|---|
| 9 teeth | A lot, in visible chunks | Bold notching, deliberate texture, breaking up a heavy line. Aggressive — stay off the hairline. | TextureCut Chunking Shear, $81.24 |
| 15 teeth | Moderate, with visible edge | Texturising ends, adding movement and edge to a cut | TextureCut Texturizing Shear, $81.24 |
| 21 teeth | Less, and blends as it goes | Soft seamless layers, removing weight without a visible line | TextureCut Blending Shear, $81.24 |
| 25 teeth, micro-serrated | Little, very evenly | Fine finishing work and invisible blending on fine hair | PerfectBlend Thinner, $164.99 |
| 35 teeth | Least per pass | Debulking thick hair gradually, with no chance of a step | Included in the SilkCut and SilkCut Pro case sets |
The rule: fewer teeth removes more hair and shows more. More teeth removes less and hides better. If you only own one thinner, own a 21- or 25-tooth — you can always take more, you cannot put it back.
4. Left-handed: buy a real left shear
A left-handed stylist using a right-handed shear has to push the blades together with the thumb, which bends the hair away from the edge and folds the cut line. It is the reason so many left-handed stylists believe their shear is dull. Olivia Garden makes genuinely reversed shears — the SilkCut Pro Left-Handed shear-and-thinner sets (5 in, 5.75 in, 6.5 in), the SilkCut Left-Handed Breast Cancer Awareness Edition, the PrecisionCut Left-Handed 6.5 in shear-and-razor set and the SwivelCut Left-Handed 5 in dual-pivot set. Most retailers do not stock these; we do.
5. Razors
The Edge Professional Styling Razor ($84.07) is a 6 1/4 in stainless guarded razor for soft, textured ends — the finish you cannot get with shears. Its blades are sold separately as a box of 10 in a safety dispenser ($21.24); budget for those, a razor with a tired blade tears. Razor cutting suits medium to thick, healthy hair. On fine or chemically damaged hair it frays the ends.
6. What the sets actually save you
The case sets are the better value if you need both tools. The SilkCut Shear & Thinner Case Deal pairs a 5.75 in shear with the 35-tooth thinner at $224.99; the TextureCut 9-Tooth & The Edge Razor Set ($249.99) includes the oil brush. Buying a $212 shear and an $81 thinner separately comes to more, and you lose the case.
7. Maintenance, which is not optional on convex
Wipe the blades after every client, and oil the pivot at the end of every day — the Shear Care Oil Pen ($8.74) exists so you have no excuse. Never let a convex shear sit wet, never close it on a bobby pin, and get it professionally sharpened rather than sharpened by whoever comes to the salon with a grinder. The Shear & Razor Stand ($29.99) holds eight tools in a 10 x 13 cm footprint and keeps blades off the counter.
The bottom line
First professional shear: 5.75 in convex. First thinner: 21 or 25 teeth. Barbering and short hair: 5 in, plus a 9-tooth for notching. Volume men's work: 6.5 in. Left-handed: buy the reversed shear, not a right-handed one you are told you will get used to. And buy the oil pen with the shear, not a year later.