You have been buying serums labeled repair, and the splits keep showing up at the window. Hold a section of dry hair up to the light and what looks like one strand at the tip is often two, the outer layer worn through and the inside split into halves that have already parted. Nothing in a bottle puts those halves back together.

The serums and masks sold as split end repair deposit a thin film along the strand. A silicone serum smooths the fray and makes the lengths catch light more evenly for a day. Both wash out at the next shampoo. The split remains. The visual fix is masking. There are days when masking is the right move, a wedding or the morning before a trim you cannot get to. Smooth the serum and let it do that visual job.

Bond-repair masks were formulated for the connections bleach breaks inside colored or lightened hair. After chemical processing, they support broken internal connections. On a physically separated tip, they deposit film. The marketing on the jar tends to blur that line.

Cutting above the split is the only real repair. Everything else is buying time before the visit.

The honest middle move, between salon trims, is to hunt the visible splits at the window with sharp scissors. Twist a small section loosely under a bright light so the splits stand out. Whitish flecks and Y-shaped doubled tips are what you are after. Tilt the scissors on a slight slant and snip above each one. Sharp matters. Dull or kitchen scissors crush the cut and seed the next round of splits. If the ends are already past the damage line, skip the home cut and book the trim.

A few habits slow the next round. Detangle from the ends upward so the knot is not dragged through the last inch where splits form. A drop of any light oil, argan or jojoba, on dry ends before bed reduces friction against the pillow. Rotate the parting and the hair tie position, since the same hairline pulled the same way concentrates stress at the same point. Keep heat off wet hair, since the water inside turns to steam and lifts the surface from within.

A proper trim every eight to ten weeks is the cadence: the salon takes the damage off evenly across every end. The home pass in the weeks between only catches the splits you can see, which is why it buys a few extra weeks rather than closing the gap. Sharp scissors under a good light buy that window; the chair is what closes it.