• Lotions are liquid preparations meant for external use without friction.
• They are applied directly to the skin with the help
of some absorbent material, such as cotton wool, or gauze soaked in it.
• Lotions are not applied to broken skin it may cause
excessive irritation. The insoluble matter should be divided very finely for
preparing lotions. Bentonite as a suspending agent is added to it.
• Lotions are applied for antiseptic action, astringent action, and germicidal action e.g. Calamine lotion.
• Alcohol is sometimes included in aqueous lotions for
its cooling and soothing effect e.g. salicylic acid lotion.
Preparation:
Lotions are prepared by triturating the ingredients to a smooth paste and then
adding the remaining liquid phase with trituration.
Storage: Lotions should be
stored in well-closed and in air-tight containers.
Labeling:
FOR EXTERNAL USE ONLY
Formula: Calamine
lotion
Rx
- Calamine – 15 gm
- Zinc oxide – 5 gm
- Bentonite – 3 gm
- Sodium citrate - 0.5 gm
- Glycerin – 5 ml
- Liquid phenol - 0.5 ml
- Rose water - q.s. to 100 ml