 [ Symptoms ] should i continue having ovary pain after it has been removed  i am 3 months post op after hysterectomy and l ovary removal but still feeling pain on left side where ovary was also feeling some in my belly button is this normal [ Disease ] unfortunately these products contain formaldehyde or gluteraldehyde which are much stronger relaxing agents than the thioglycolate that is typically found in most relaxing products keratin is the window dressing on most of these products because they can still damage the hair and make it very brittle repeated use of these products too close together can compromise hair strength and result in breakage consumers should also be aware of the fact that some brazilian treatments have much higher formaldehyde content than is allowed by fda guidelines these can result in damage or irritation to the eyes throat and lungs