From MSDS for Developer:
HEALTH HAZARD DATA
Routes of Entry
Inhalation: Yes
Skin: Yes
Ingestion: Not likely
Health Hazards
May cause skin and severe eye irritation. Harmful if swallowed. May cause severe irritation of gastric mucous membranes if swallowed.
Signs and Symptoms of Exposure
Irritation of skin, eyes, and/or mucous membranes.
Medical Conditions Generally Aggravated by Exposure
None known
From MSDS for Oxidizing Hair Bleach:
HEALTH HAZARD DATA
Routes of Entry
Inhalation: Yes
Skin: Yes
Ingestion: Yes
Health Hazards
Eyes: Irritation
Skin: Irritation, possible allergic dermatitis
Ingestion: Harmful if swallowed, slightly toxic
Inhalation: Irritation and possible sensitization
Irritation of eyes, skin and mucous membranes. Possible irritant/allergic dermatitis and respiratory signs and symptoms, the onset of which may be delayed.
Medical Conditions Generally Aggravated by Exposure
Existing dermatological conditions, such as eczema, and respiratory conditions, such as bronchial asthma and/or chronic bronchitis, may be exacerbated.
From MSDS for Multi-lights Conditioner:
HEALTH HAZARD DATA
Routes of Entry
Inhalation: Yes
Skin: Yes
Ingestion: Yes
Health Hazards
No health hazards anticipated.
Signs and Symptoms of Exposure
No health hazards anticipated.
Medical Conditions Generally Aggravated by Exposure
None known.

From MSDS for Oxidizing Hair Bleach:
Possible allergic dermatitis. Possible respiratory sensitization could occur.

NTP: Not recognized as carcinogenic.
IARC Monographs: Not recognized as carcinogenic.
OSHA: Not recognized as carcinogenic.
ACGIH: Not recognized as carcinogenic.

For Exposure to Developer:
If swallowed, drink one or two glasses of water or milk. Call a physician, hosptial emergency room, or poison control center immediately. Do not induce vomiting. Get medical attention.
If in eyes, flush with water for at least 15 minutes and get medical attention.
If on skin, flush with water, then wash with soap and plenty of water. Consult a physician if irritation occurs.
For Exposure to Oxidizing Hair Bleach:
EYES: Immediately flush with luke-warm water and get medical attention if irritation persists. SKIN: Immediately flush with luke-warm water and get medical attention if irritation persists.
INGESTION: If swallowed, do not induce vomiting. Call a physician, hospital, emergency room or poison control center immediately. Get prompt medical attention.
INHALATION: Move to fresh air. If irritation symptoms persist, get medical attention.
NOTES TO PHYSICIANS OR FIRST AID PROVIDERS: Acute health hazards may be delayed. Most common symptoms include irritating properties to eyes/respiratory system and skin.
For Exposure to Multi-lights Conditioner:
If in eyes, flush with plenty of water for at least 15 minutes. Get medical attention if irritation occurs.
If swallowed, drink one or two glasses of water or milk and consult a physician.
If on skin, wash with soap and water.

For Developer:
Do not use or store with or near fuels, solvents, or other organic materials. Avoid iron, zinc, and reducing agents. Store in a cool place away from direct sunlight. Keep out of reach of children.
For Colorant:
HANDLING AND STORAGE: Use only with adequate ventilation and avoid inhalation. Avoid contact with eyes and skin (other than areas of application). Do not inhale or ingest. Prepare and use in a well-ventilated area. Do not store with or near fuels, solvents or other organic materials. Avoid heat, moisture and reducing agents.
Refer to product insert or container for additional use warnings.
OTHER PRECAUTIONS: Do not allow stored material to come into contact with moisture (keep lids properly affixed on product stored in plastic tubs). Do not store metal utensils inside containers of product.
For Multi-lights Conditioner:
Store bulk quantities in a cool, well-ventilated room. Limit quantities on hand to the extent possible. Store away from possible sources of ignition. Observe usual precautions relative to static electricity. Avoid oxidizing agents and nitric acid.
Other Precautions
For external use only. Use only as directed.

For Developer:
Although dilute (<8%) hydrogen peroxide solutions are not regulated as hazardous wastes under RCRA, physical and/or chemical deactivation/degredation of the peroxide solution is the recommended method of treatment and disposal for these products.
For Oxidizing Hair Bleach:
Hair bleaching products are ignitable RCRA hazardous wastes when intended for disposal. Physical and/or chemical deactivation/degradation is the required method of treatment and disposal. RCRA HAZARD CLASS: 0001. Follow all local governmental requirements intended for disposal.
For Multi-lights Conditioner:
Non-hazardous products are not regulated as hazardous wastes when intended for disposal. However, incineration is the recommended method of treatment and disposal for such products.