Koninklijke Philips Corporation N.v.

Jan Brouwer

Karl Catharina Van Bree

Gerben Kooijman

Felipe Maia Masculo

Shakith Devinda Fernando

Cornelis Willem Hameetman

Adrienne Heinrich

According to an aspect, there is provided an apparatus for use with a treatment device. The treatment device is configured to apply a light pulse to skin of a subject to perform a treatment operation to hairs on the skin. The apparatus comprises a processing unit configured to receive one or more images of a first area of the skin from an imaging unit, wherein the imaging unit is arranged to obtain images of the skin of the subject; process the one or more images to determine whether the hairs on the first area of the skin have been treated with a light pulse based on a degree of at least one of carbonisation and curling of the hairs on the first area of the skin as shown in the one or more images; and output a first signal indicating whether the hairs on the first area of skin have been treated with a light pulse.

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EINDHOVEN, Netherlands

Jan Brouwer