Here's a hard truth: 90% of hair serums are just silicone in a fancy bottle.

They coat your hair to make it feel smooth for a day, but they're doing nothing underneath. Your hair is still thinning, still breaking, still dry. You just can't tell because it's covered in plastic.

I spent 2 years testing formulations before launching Strand Serum. Here's what I learned actually moves the needle:

Biotin — the building block. Most people are deficient and don't know it. Applied topically, it strengthens the hair shaft from the outside in.

Keratin peptides — not the salon blowout kind. Small-molecule keratin that actually penetrates the cuticle and fills in damage.

Cold-pressed argan oil — the only oil that doesn't weigh fine hair down. Locks in moisture without the grease.

The key is concentration. Most brands use trace amounts of these ingredients so they can put them on the label. We use clinical-grade concentrations because the whole point is that it works.

If you've been cycling through serums hoping the next one will be different — this is different. Your hair will tell you within 3 weeks.