; Extension If the Food and Drug Administration determines that the available data and information are not adequate to make a proposed or final determination regarding safety under subsection (d)(4), with respect to a cosmetic ingredient or non-functional constituent, the Food and Drug Administration shall— (A) publish such finding on the Internet website of the Food and Drug Administration not later than 90 days after the close of the relevant comment period for the ingredient or non-functional constituent under subsection (a)(2), in the case of a proposed order, or subsection (d)(2), in the case of a final order; and (B) (i) include a notice providing interested persons an additional 30 days from the notice date to provide additional data and information; and (ii) if, after the 30-day period under clause (i), the Food and Drug Administration determines that additional safety substantiation with respect to such ingredient or non-functional constituent is necessary to make a safety determination— (I) include a notice specifying an additional time period, not to exceed 18 months from the notice date, during which time the determination made by a responsible person under subsection (a) or (b) of section 609 with respect to the safety of such cosmetic ingredient or non-functional constituent shall be deemed to be in compliance with the requirements of this Act, but shall not affect final determinations of safety under subsection (d); and (II) plan to obtain such data and information. (2) Determination