It is a green cosmetic inside and out!
The 100ml bottle is made of bioplastic, the sustainable petrolatum-free "plastic" derived from sugar cane.
Bottle: PET 1 - differentiated plastic
Cap: PP5 - differentiated plastic
Check local regulations
The 1L bottle is made of re-bottle recycled plastic, i.e. post-consumer recycled plastic, i.e. used, recycled, refurbished and reused plastic to reduce waste on our planet, a material even greener than the normal recycled plastic that instead derives usually from industrial waste!
Bottle and cap: PET 1 - differentiated plastic
Check local regulations