Great hair at night, flat and frizzy by morning? Your style isn't the problem. Your pillowcase is.

If your silk scarf ends up on the floor by 2 a.m. and the curling iron comes out every morning anyway, here's what happens to your hair overnight, and the simple layer that keeps it neater.

You spent forty minutes on your hair last night, or you finally got the curls to sit right. You go to bed happy with it.

At 7 a.m. the mirror says otherwise: frizz on one side, curls squashed flat on the other, and a knot at the back that takes ten minutes and half your conditioner to get out.

If you care about your hair, some of this probably sounds familiar:

Big day. Interview, wedding, first day somewhere new. You do your hair the night before so you can sleep in a little.

You wake up, look in the mirror and it's gone. So you're back in the bathroom at 6:30 with the iron heating up, redoing it in a rush and running late anyway.

Each one either slips off or stays behind on the bed. None of them stay with your hair all night.

Every time you turn over, your hair rubs against cotton

You turn over during the night, usually without waking. Each turn drags your hair across a cotton pillowcase.

Cotton has more grip than you'd guess. Hours of that rubbing is what roughs up the surface of your hair and squashes the style.

The problem isn't your hair. It's eight hours of friction against cotton.

Wrap your hair in something smooth, and it slides when you turn instead of catching.

The trick is keeping that smooth layer on your hair all night, wherever your head ends up, without squeezing.

So a real fix has to do three things

That's exactly what the Satin Sleep Bonnet does.

Meet the Satin Sleep Bonnet

Here's how it works

A double-layer satin bonnet with a soft band, so your hair stays covered wherever you sleep.

First night: gather your hair loosely, pull the bonnet on with the band at your hairline, tuck in the ends and adjust. In the morning, take it off and shake your hair out before you reach for a brush.

See the Buy 1, Get 1 Free offer

What changes this week

Next big morning, you sleep in instead of redoing your hair at 6:30.

A silk pillowcase or a salon blowout costs more than this whole bundle.

Two bonnets for $20

Every order is Buy 1, Get 1 Free: two bonnets for $20, which works out to $10 a bonnet. Wear one while the other dries after a cold hand wash.

Sharing with a sister or daughter? The bigger bundles work the same way: 4 for $40 or 6 for $60.

Claim my free one

Try it for 30 days, risk-free

Here's what to do next

Get mine: 2 bonnets for $20

It’s your call

Or you can keep redoing your hair every morning

Tomorrow will look a lot like today: great hair at bedtime, frizz and flat curls at 7, the iron heating up.

Or you can put a smooth layer between your hair and the pillow tonight and wake up closer to how you went to bed.

Questions people ask

P.S. The short version: hours of rubbing against a cotton pillowcase is what roughs up your style overnight. This double-layer satin bonnet keeps a smooth surface around your hair all night. Buy 1, Get 1 Free: two bonnets for $20, with a 30-day money-back guarantee. Get yours here.