Coat BRIGHTENER shampoo

It was shower time for them today
This time they didn't make much noise while bathing

We used the new cat shampoo that
we bought recently,
only to realise minutes before their bath
that it was a "coat brightener shampoo",
which was described as a
"Brightener that whitens and brightens"

Then the long description on the side of the bottle said:
".....high quality shampoo specifically developed for
white and light coloured coats....."

Hmm.
Why didn't we notice this when we decided to get this one?
And both of them are not exactly very white.
Maybe except for Pepper's chest hair and 4 paws,
which are white

So far (after their bath)
their colours still look pretty normal.

So that's good I guess