this is the central question of the entire category. 20% ascorbic acid applied to a lipid barrier it cannot cross achieves zero dermal vitamin c delivery. the percentage is irrelevant when the molecule is blocked at the surface. 3% multisal® vitamin c that reaches dermal fibroblasts produces measurably greater collagen synthesis outcomes than 20% free ascorbic acid that does not. published data shows 146% greater skin tissue retention for multisal® vs. equivalent-concentration free ascorbic acid. bioavailability at the target tissue is the only metric that matters. concentration at the surface is not bioavailability.

riboxyl™ is d-ribose — the 5-carbon sugar that forms the phosphate backbone of atp. applied topically at 1%, it enters fibroblasts and is incorporated into the atp synthesis pathway, restoring energy reserves to near-youthful levels. aging fibroblasts at 18% atp cannot execute collagen synthesis even with perfect upstream signals. riboxyl™ solves this.

why doesn't anyone else include it? most brands have not solved the delivery problem first. when your vitamin c never reaches the dermis, atp at the dermis is irrelevant — the synthesis signal that would require the energy never arrives. riboxyl™ is the ingredient you include when your delivery works. enc/ir is, currently, the only consumer anti-aging brand where delivery works.

encap c+ contains bakuchiol — which has published pregnancy-safety evidence and is widely recommended as the retinol alternative for pregnant and nursing individuals. it does not contain retinol, retinoids, or any ingredient with established pregnancy contraindication.

however, the multisal® nano-delivery achieves vitamin c concentrations in skin tissue not comparable to conventional topical application. the deeper delivery mechanism has not been specifically studied in pregnant populations at scale. we recommend physician consultation before use during pregnancy — not because we know of a risk, but because the delivery architecture is different from what your physician's standard guidance is based on.

use encap c+ every evening for 90 days. at the end of the protocol, if you do not observe measurable improvement in skin firmness, fine line depth, texture, and radiance — email us at the address in your order confirmation. full refund processed within 48 hours. no photos. no forms. no questionnaire. no conditions attached.

we offer 90 days because collagen synthesis requires three complete skin cycles to produce structural, visible change. we are confident in the outcome because the mechanism is real and the data is published. the guarantee exists because we want you to have sufficient time to see what delivered vitamin c actually does — not because we are concerned about the refund rate.