Parents looking for an alternative to disposable nappies will find all the information they need at an event at the Eden Project this weekend.
There are about 40 different types of washable nappies on the market
The Cornish Real Nappy Project aims to highlight the amount of disposable nappies thrown away every year.
The event is part of this year's Real Nappy Week, from 27 March to 4 April.
The two-day event called Parenting Doesn't Need to Cost the Earth consists of a weekend of workshops and talks on a more natural approach to parenting.
And a series of other activities are planned for Real Nappy Week, a national event started by the Women's Environmental Network.
The Cornish project will be setting up the Cornish Real Nappy Network, a free service giving parents all the information they need about washable nappies, including regular free newsletters and details of events.
And on 29 March Cornwall County Council will be launching a new real nappy leaflet in conjunction with the project and the NHS Trust, which will be distributed via the County Registrar Service to all newly registered babies.
Rebecca Thomas of the Cornish Real Nappy Project said: "Today's washable nappies are shaped to fit, fasten with Velcro or poppers and are covered with soft waterproof wraps.
"A 60° wash is all that's needed, so no smelly buckets full of bleach, and they can even be tumble-dried.
"Enough washable nappies to last your baby right up to potty training costs from £100 to £400 depending on the type and there are about 40 different varieties on the market."