To add to this:
A silkie with silkie feathers AND the frizzle gene would look like this:
Hen - notice how the feathers on Fluffy’s neck curl upwards and her wing feathers are curly.
Cockerel - notice again how the feathers on the neck curl upwards - Clyde looks like he stuck his beak in an electrical outlet!
Now compare this with a regular silkie feathered bird. The feathers are smoother.
Hen - note Marty has a very smooth flow to her neck feathers and her wing feathers are not curled.
Pullet - Georgie Girl also has very smooth feathering not at all like the more curly feathers of a frizzle
Rooster - Note the smooth flowing neck feathers, even though Teddy has a spike-y crest his other feathers are not curled
Satin Silkie - Henny Penny has regular feathers
A Satin Silkie with the frizzle gene which has curled the regular feathers, this is Curly she is having a snooze, but this shows her frizzle feathers really well.
A Silkie x Polish Roo - Bert’s mum is the white frizzle Silkie, Fluffy, in those first photos. This boy shows regular feathers, no frizzle, but has lovely feathered legs.
A Silkie x Polish hen - her mum is the sleeping Satin Silkie frizzled hen, Curly. Betty shows the regular feathers with the frizzle gene like her mum, but alas no feathered legs, she does have dark skin and mulberry comb and wattles though.
So these are the possibilities when crossing regular feathers and Silkied feathers with a frizzle gene.