Hyperpigmentation has intensified due to sun exposure, but do not worry, even so all the spots will disappear. I am 100% sure because, unfortunately, I have seen how this phenomenon evolves too often.
I live and work in the Costa del Sol, most of my local clients ignore our recommendations. However, it has never happened to my foreign clients since most of them come from countries in Northern Europe, or from countries whose religion forbids the exhibition of their bodies.
About 30 years ago, dermatologists recommended taking sunbaths in order to accelerate the healing process in any type of wound. Later, they observed that this was counterproductive, and then the recommendation was just the opposite.
Sunscreens prevent sunburn, but this does not prevent tanning. Note that although white mothers protect their children with high sunscreens, they acquire a nice golden color because they spend hours playing in the sand.
This hyperpigmentation intensified by the sun will disappear as the winter months pass and the cells of your skin are renewed.
I wonder why many experts recommend not exposing the areas to the sun for only 48 hours post-treatment. The treated areas should not be exposed until hyperpigmentation (or hypopigmentation) has disappeared, especially in the upper and lower lip and body areas. This is the best indication that the healing process is over.
So, I repeat, DO NOT WORRY! a further clearance would be beneficial, probably as much as laser skin surfacing treatment.