Your bathroom is usually one of the dirtiest rooms in your house, requiring frequent cleaning to keep it fresh and smelling nice. Use these toilet & bathroom deep cleaning hacks to get your bathroom cleaner than ever!
For a sparkling bathroom mirror

Just take a used bag of black tea and rub it across the bathroom mirror. Soon it would sparkle like a new mirror simply because the tannic acid eliminates the dust and grime.
Cleaning showerhead of its deposit

If the showerhead has deposits over its fine holes, the water must be spraying itself in weird directions. Take one large cup of vinegar and hold it in a plastic bag. Now, wrap this plastic bag around the shower head (do tie it tightly lest it falls). Leave it overnight. In the morning, the vinegar would have cleaned the showerhead.
Clean sink and taps

Clean the sink and fixtures with a cloth that is dabbed with baby oil. They will be cleaned easily and shine like never before. The fixtures can also be covered with a transparent nail paint that will prevent rust from gathering there.
66. Cleaning of scum-ridden bathtub – Scrub clean your bathtub with salt sprinkled over grapefruit. You would never prefer using chemical cleaners again thanks to excellent in which it would clean the tub.
Cleaning of scum-ridden bathtub

Scrub clean your bathtub with salt sprinkled over grapefruit. You would never prefer using chemical cleaners again thanks to excellent in which it would clean the tub.
Chemical free toilet cleaner

If you are not very happy with the way chemical toilet cleaners work, here a simpler way. Make a paste of baking soda and vinegar to clean the toilet. Allow it to rest for 10 to 15 minutes and then flush.
Getting rid of soap scum

To get rid of all the soap scum that tends to sit on the shower partition, spray non-stick cooking spray. This may sound a little odd, but it is really effective. After 20 to 25 minutes, wipe it clean and the soapy scum will be gone. Just take care of slipperiness.
Untangle rings of shower curtain

In many instances, shower curtain rings remain damp making them to tend to be stuck over the rod. There is a simple and an interesting way to avoid this; just smear petroleum jelly over the rings and they would glide over the rod effortlessly.
Wonderful suggestions! I am very sensitive to cleaners and have a house that is nearly 100 years old. So, I have a lot of the problems you address. Is there a book full of these tips?