Campaign targets Body Shop in ethics protest.
Body Shop and its founder, Dame Anita Roddick, came under fire earlier this year following a decision to sell the chain to cosmetics giant L'Oreal.
Baby Milk Action said Nestle owned
26.4% of L'Oreal, which in turn linked it to the Body Shop.
The group's campaigns and networking coordinator, Mike Brady, said: "We cannot ignore the fact that buying Body Shop products will put money in the coffers of Nestle.
He added 99% of the campaign's supporters said they would add Body Shop to their personal boycott list and seek ethical alternatives.
Body Shop urged ethical shoppers to continue buying its goods.
It said in a statement: "The Body Shop remains committed to operating our business in a responsible and ethical manner, so we believe a boycott is wholly unwarranted."
"L'Oreal is quoted on the French stock exchange and, as such, operates entirely separately from shareholders such as Nestle."