The invoice value is to be utilized within a maximum period of six months from its date, and the reviewer/shall not be entitled to claim the service after the specified period, except for the laser package, which is valid for one year from the date of invoice issuance. The total invoice value is considered for the price offered during the payment period and may vary depending on seasons and offers, and services from different previous or future offers cannot be combined. The full paid amount can be refunded within a week from the invoice date, and if the period is exceeded, 25% of the invoice value will be deducted. If a refund is requested one day before the scheduled date, 90% of the invoice value will be deducted, except for special cases. The paid amount can be exchanged for other services, except if part of the services has been utilized, in which case the remaining amount will be deducted based on the basic session price without discount. The remaining amount can be used. The invoice value is considered for the price offered during the payment period and may vary depending on seasons and offers, and services from different previous or future offers cannot be combined. The appointment is considered complete if the client is absent without prior confirmation.