My son also had very bad skin at about 4 months - his eczema was so very bad and covered most of his body. I would not use talc as it stops the skin breathing and also traps the sweat in the creases - I agree with TNT.
Do not use soap in his bath - just water or water and natural oil (olive is fine) or aqueous cream. I found that if I didn't want to use the steriod cream I would need to apply aqueous cream or Aveno cream (not sure if you can get this in HK) atleast 4 times a day to the effected areas - I basically applied cream every time I changed his nappy - he is now 8 months old and I still apply the cream but his skin is a lot better - as others said I think he may out grow it.
Do not use soap in his bath - just water or water and natural oil (olive is fine) or aqueous cream. I found that if I didn't want to use the steriod cream I would need to apply aqueous cream or Aveno cream (not sure if you can get this in HK) atleast 4 times a day to the effected areas - I basically applied cream every time I changed his nappy - he is now 8 months old and I still apply the cream but his skin is a lot better - as others said I think he may out grow it.