If I recall correctly eggs also are high in keratin which is why they will give the same feel to soap and I would use them when my granddaughter was here with an abundance of eggs. I do use silk cocoons when I do not forget to put them in when I rebatch.
I will mention I really do not care what anyone used in soap for personal use, and in the UK it has to go through an assessment before selling.
I will mention I really do not care what anyone used in soap for personal use, and in the UK it has to go through an assessment before selling.