Best product/method for grease marks on uniforms

[ISeeTrees]

DC has the most annoying habit of wiping greasy hands on school tops/dresses, leaving greasy fingerprints all over the front of them.
I've tried washing up liquid on them before washing, vanish, hot wash but they never quite come clean.
I've used the vanish/other soap bars but as the uniform is red & grey, I find it takes the colour out and sometimes even the stain remains which is frustrating! Any ideas appreciated..

Rub talc into the grease stains before washing.

The only other product I can think of that you haven't already tried is elbow grease spray. It's the yellow multi purpose cleaner spray. I've used that on grease stains before and it worked really well.

For any grease or oil stains I use Bicarbonate of soda mixed with washing up liquid to form a paste. Massage gently into the stain for a few minutes, then leave for a few minutes, then wash as normal.

Are you using Fairy Liquid? And massage it into the stain until it all goes white and lathery. Then leave it a bit then wash out.

Stain Devils, the fats and sauces one, works really well.

I use hand soap on any greasy stains and it works really well. Tried it once as my laundry basket is in the bathroom and I’ve used it ever since.

Neat washing up liquid, leave for 20 mins then wash with bio detergent, Ariel cold wash is fantastic.

Thanks all, sorry I forgot I'd started this thread (until I got the uniform out this morning!).
I wondered if the specialist stain devils was worth a try @Veryangryboy but haven't actually seen it for ages, will keep my eyes peeled!
I tried the fairy/lathering and leaving but it hasn't worked. I imagine talc would help if it was a fresh grease stain but washing them has almost "set the stain". Bit of bicarb can't hurt to try either.
I haven't tried elbow grease so I'll give that a go, and bio washing powder. We're a bit of an eczema prone household so I'm usually wary about trying new stuff but I can always rewash. Thanks again!