This technique is used to suppress technique-induced marks on a person. Marks of weaker power can be completely suppressed by this technique alone, but for marks of higher power, it will cause the seal's power to become dependent on the recipient's own willpower to some extent, especially if the sealer is not experienced enough to strengthen the seal with his own power.
This technique is quick, but painful. The seal can be removed at any time by the caster or whoever the seal. Since this seal relies on the will of the individual on whom it is placed, the affected may be able to will it away without an unsealing technique.