An F1 is really the first generation of the cross between two purebred dogs. If you cross a purebred Golden Retriever with a purebred Poodle - this is considered an F1 puppy.
This mix can produce non-shed & low to medium shed coats in a variety of types that can be soft and wavy or even tighter curl.
WHAT DOES F1B MEAN?
An F1b is a "Back~cross"
This means that you take a "Doodle" who has 2 purebred parents that are different breeds.... and you breed this "Doodle" with a purebred poodle.
This type is better for those seeking a dog if there are allergies or asthma involved.
These coats are typically anywhere from a loose wave to a tight curl.
This is a very good question, but unfortunately has no cut and dry answer.
Doodles are a crossbreed dog which means they are not "Standardized". Simply put the puppies in each litter can have a variety of looks or coat types. This is not a bad thing - as long as you understand it, and as long as you are dealing with a responsible breeder who is honest in evaluating their own puppies.
If a breeder you are dealing with simply tells you that their puppies are hypoallergenic - use caution. Have you ever seen a family with three children from the same two parents - and one of them looks as if they are adopted? This same thing can happen with doodles - but there are also times when you have puppies that have very consistent coat types and overall appearances amongst their own littermates. An experienced breeder will be able to talk to you to find out what your needs are for allergy concerns along with your preferences for a desired look and help you to make a wise choice.
The other thing that makes this hypoallergenic question a tough one is the fact that each person's allergies can be very different from the next person who also suffers from allergies. So there may not be one specific coat type that is perfect for every single person who has special needs in this area.
Now, in general we will always recommend an F1b coat (see below for an explanation of what F1 and F1b really mean) for anyone with allergy or asthma concerns that are dog related. But you must also realize that there are some outstanding F1 coated puppies and some not so great F1b's.... so in addition to the generation (f1 or f1b) you must also take into account the attributes of the individual puppy you are interested in.
Don't let this all discourage you! Doodles are typically a fantastic choice for those with allergies - we simply want to make sure you are well informed before choosing a puppy!