Most Vitamin C face serums, washes are expensive

Compared to most other face washes and serums available earlier, the vitamin c face serums and washes are more effective in removing dark spots and making the skin glow and look fairer.
Yet most of these products are expensive costing at least Rs 400 for the smallest pack available.
Little extra has a wide range of skin and hair care products.
Some influencers are recommending Riceberry vitamin c face serum, for removing dark spots and improving the complexion. The serum should be applied twice a day. However, the serum is expensive costing more than Rs 400 per day.