In Friday's episode of the soap, it will be revealed that Margolis's character Ricky Campbell is a carer for his father Martin (Grant Masters), who suffers from MS.
Discussing the new plot, Margolis told PA: "I was so grateful I was given the opportunity to do it. Having done research on it, about what young carers have to go through every day, [you realise] it's a hard life.
"It's brilliant what they do and hopefully this storyline will get people to realise, 'That's what I'm going through'."
On the physical challenges of the storyline, he added: "The guy who plays Martin, Grant Masters, makes himself a dead weight. He's quite a strong guy. I've had to physically lift him up and I'm tired after doing it. And that's just from acting it. The people who actually go through it - it's very hard."
Margolis was first seen in Hollyoaks last summer when he was introduced as the internet boyfriend of Anita Roy (Saira Choudhry).