Breakdown of Usa un poquito; es un gel absorbente y absorbe bien.
ser
to be
y
and
un
a, an (masculine)
usar
to use / to wear
Questions & Answers about Usa un poquito; es un gel absorbente y absorbe bien.
How does the adjective absorbente relate to the verb absorber?
Absorbente is an active participle adjective formed by taking the stem of the verb absorber (to absorb) and adding the suffix -ente. For -er and -ir verbs, this active suffix is usually -ente or -iente. It translates to "absorbing" or "absorbent"—meaning the noun it modifies actively performs the action of the verb.
Since gel is a masculine noun, why doesn't the adjective change to absorbento?
Adjectives created with the -ante, -ente, and -iente suffixes are almost always gender-neutral because they end in -e. Whether you are talking about un gel absorbente (a masculine noun) or una toalla absorbente (a feminine noun, meaning "an absorbent towel"), the adjective stays exactly the same. It only changes to match plural nouns (absorbentes).
How do we know usa is a command here and not just "he/she uses"?
Context tells us this is an imperative (a command) directed at tú (informal "you"). The affirmative informal command form of usar is usa, which happens to look exactly like the third-person present tense form. As a quick refresher: if it were a negative command ("don't use"), it would switch to the subjunctive mood: no uses.