Frozen Proposal

UI/UXMercado Libre

A complete redesign of a high-stakes financial flow, restructuring information architecture, simplifying the UI and applying strategic motion to respect users' decision-making time.

RoleSenior UX/UI Designer
Timeframe2025
ToolsFigma & Make
Frozen Proposal
Designed by
Sara Lobo®
Date
2025
Category
UI/UX

Context

Prendários is Mercado Libre's vehicle-financing product. The frozen proposal is the moment a customer's approved offer is locked and presented for final review — a high-stakes, time-sensitive financial decision. The experience starts with a push notification and guides users through every contracting step of their vehicle financing.

The problem

The original flow suffered from heavy information overload, low predictability, and required fast decisions in a complex financial context. This led to confusion, longer comprehension time, and lower completion rates.

Process & decisions

01

Restructuring the flow before touching the UI

I mapped the original journey and rebuilt its information architecture around how users actually decide: fewer competing messages per screen, predictable steps, and a pace that respects the weight of a financing decision.

02

Designing the emotional peak with color science

For the approval moment I researched the psychology of sunset light — golden hour, sun at the horizon, and twilight — mapping the biological and psychological response to each phase. Golden-hour warmth (comfort, closeness, reward) set the art direction for the celebration screen: the user driving toward the light in their new car.

Color-psychology research: three sunset phases mapped to biological and emotional responses.
Color-psychology research: three sunset phases mapped to biological and emotional responses.
Frame-by-frame analysis of composition, light and focus for the celebration artwork.
Frame-by-frame analysis of composition, light and focus for the celebration artwork.
03

Prototyping motion end to end

Motion was specified as part of the product, not decoration: it guides reading order, hierarchy and pacing. The full flow was delivered as an interactive prototype — from the first push notification to the final celebration — so engineering could feel the intended rhythm before building it.

The solution

I led the complete redesign of the experience, restructuring the information architecture, simplifying the UI, and applying strategic motion with art direction and emotional design. Motion guides reading, hierarchy, and pacing, reducing noise and increasing trust at every step.

Demo

The full prototype: push notification → contracting steps → car photo → signature → celebration.

Results

0%less information overload
0%increase in completion rate
0%faster access to approval

By combining a well-structured architecture, simplified interface, and purposeful motion, the design dramatically reduces cognitive load and improves decision-making.

Screens

Emotional design in motion: the celebration moment, with golden-hour art direction born from the sunset color-psychology research.
Next project

Loan consigned at Neon Bank