1. Assess the natural lash and choose 0.05 or 0.07 based on its strength rather than the look requested.
2. Cleanse and prime, then tape and map the eye across the three available lengths.
3. Arrange the box so all three lengths are within reach.
4. Isolate a single natural lash and take the mapped length.
5. Dispense a generous glue dot; dip shallower if you are working at 0.05.
6. Place the fan flat and hold until the base grabs.
7. Space wider than at 5D, since seven fibres fill faster.
8. Comb through, check for stickies, and cure fully.

• Applying at 5D spacing - seven fibres cover more, and unchanged spacing produces a closed set. Widen and judge on coverage.
• Using the same dip depth across both diameters - 0.05 wicks faster and clumps where 0.07 would be fine. Adjust when you switch.
• Mapping outside the box range - a three-length box only supports maps within that span. Check the client's map fits before you start.
• Choosing 0.07 for the look on a fine lash - the set will shed regardless of how good it looks on the day. Assess the lash first.
• Under-gluing - a small base carrying seven fibres fails first if the dot is short. Increase it deliberately.

3IN1 BOX VS. 6IN1 BOX AT 7D

• Lengths - 3in1 (750 fans): Three consecutive | 6in1 (1,500 fans): Six consecutive
• Map coverage - 3in1 (750 fans): Suits narrow-range contouring | 6in1 (1,500 fans): Suits full inner-to-outer mapping
• Kit footprint - 3in1 (750 fans): Compact - good for mobile work | 6in1 (1,500 fans): Larger, but replaces six trays
• Cost per set - 3in1 (750 fans): Lower entry cost | 6in1 (1,500 fans): Better value per length if all sizes are used
• Stock risk - 3in1 (750 fans): Low - all three sizes get used | 6in1 (1,500 fans): Unused sizes if your map is narrow
• Best for - 3in1 (750 fans): Artists with a settled, narrow map | 6in1 (1,500 fans): Artists contouring across the full eye

Materials: PBT pro-silk fibre with a light cosmetic bonding agent at the base. Vegan, latex-free and cruelty-free. Patch test new clients for adhesive sensitivity.

Three lengths seems restrictive for a full set - is it?

It depends entirely on your map. Many artists contour across only three or four lengths in practice and never touch the extremes, in which case a 3in1 in the right range covers a whole set. If you genuinely map from a 7mm inner corner to a 16mm outer, three lengths will not be enough.

At 7D, does the diameter choice change how many fans I place?

Slightly - 0.05 fans blend into each other and can be placed marginally closer, while 0.07 fans need room for their definition to show. The bigger difference is in weight, which determines which clients can wear which.

My 7D 0.07 sets look heavy but my 7D 0.05 sets look thin on the same client. Why?

Thicker fibre reads as weight and finer fibre reads as softness even at identical fibre counts, so your eye is registering the diameter more than the density. If neither is right, the answer is usually a length or curl adjustment rather than another diameter change.

Should I space differently between the two diameters?

Marginally: 0.07 fans need slightly more room so their definition is visible, while 0.05 fans can sit closer without looking crowded. Both need wider spacing than a 5D fan of the same diameter.

Is 7D enough to cover a sparse natural lash line?

Partly - it will improve the appearance significantly, but genuinely sparse lash lines are better served by a higher count at a finer diameter, where fibre count fills gaps without adding weight. 7D is best on average natural density where the goal is fullness rather than gap-filling.